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Subject: [Boost-commit] svn:boost r85634 - in trunk: boost/exception/detail libs/exception/doc/source libs/exception/test
From: emil_at_[hidden]
Date: 2013-09-10 01:05:41

Next message: emil_at_[hidden]: "[Boost-commit] svn:boost r85635 - trunk/boost/exception/detail"
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Author: emildotchevski
Date: 2013-09-10 01:05:41 EDT (Tue, 10 Sep 2013)
New Revision: 85634
URL: http://svn.boost.org/trac/boost/changeset/85634

Log:
Ticket 9069, thanks sarum9in

Text files modified:
   trunk/boost/exception/detail/exception_ptr.hpp | 3
   trunk/libs/exception/doc/source/boost-exception.reno | 7120 +++++++++++++++++++--------------------
   trunk/libs/exception/test/cloning_test.cpp | 2
   3 files changed, 3560 insertions(+), 3565 deletions(-)

Modified: trunk/boost/exception/detail/exception_ptr.hpp
==============================================================================
--- trunk/boost/exception/detail/exception_ptr.hpp Mon Sep 9 19:14:48 2013 (r85633)
+++ trunk/boost/exception/detail/exception_ptr.hpp 2013-09-10 01:05:41 EDT (Tue, 10 Sep 2013) (r85634)
@@ -21,6 +21,7 @@
#include <boost/exception/diagnostic_information.hpp>
#include <boost/exception/detail/type_info.hpp>
#include <boost/exception/detail/clone_current_exception.hpp>
+#include <boost/units/detail/utility.hpp>
#include <boost/shared_ptr.hpp>
#include <stdexcept>
#include <new>
@@ -89,7 +90,7 @@
 std::string
 to_string( original_exception_type const & x )
 {
- return x.value()->name();
+ return units::detail::demangle(x.value()->name());
 }
#endif

Modified: trunk/libs/exception/doc/source/boost-exception.reno
==============================================================================
--- trunk/libs/exception/doc/source/boost-exception.reno Mon Sep 9 19:14:48 2013 (r85633)
+++ trunk/libs/exception/doc/source/boost-exception.reno 2013-09-10 01:05:41 EDT (Tue, 10 Sep 2013) (r85634)
@@ -52,24 +52,28 @@
 <hook>
 <hook>
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+ <size>2</size>
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- <string>boost/exception/info_tuple.hpp</string>
+ <string>errinfo_api_function</string>
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 <string></string>
@@ -93,38 +97,27 @@
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+ <empty>1</empty>
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 </hook>
 <title>
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+ <string>boost exception</string>
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+ <string>boost-exception</string>
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 <size>1</size>
 <variant>2</variant>
- <string>(:include include:)
(:auto also:)
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+ <string>(:include include:)
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@@ -138,28 +131,24 @@
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- <string>../../../../boost/exception/exception.hpp</string>
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 <base>0</base>
 </path>
 </file>
 </hook>
 <title>
- <string>enable_current_exception</string>
+ <string>boost/exception/errinfo_file_handle.hpp</string>
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 <string></string>
@@ -183,31 +172,20 @@
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+ <string>Types</string>
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@@ -228,24 +206,32 @@
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 <type>0</type>
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 </hook>
 <title>
- <string>boost/exception/current_exception_cast.hpp</string>
+ <string>error_info::value_type</string>
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 <string></string>
@@ -269,34 +255,27 @@
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 <title>
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(:auto also:)
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 <weak_ptr>
@@ -311,26 +290,26 @@
 <hook>
 <stream_hook_path>
 <size>1</size>
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 </path>
 </file>
 </hook>
 <title>
- <string>diagnostic information</string>
+ <string>boost/exception/all.hpp</string>
 </title>
 <file_name>
- <string>tutorial_diagnostic_information</string>
+ <string></string>
 </file_name>
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@@ -351,17 +330,28 @@
 <hook>
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- <string>exception types as simple semantic tags</string>
+ <string>copy_exception</string>
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@@ -385,24 +375,32 @@
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 </file>
 </hook>
 <title>
- <string>errinfos example</string>
+ <string>diagnostic_information</string>
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 <string></string>
@@ -410,7 +408,9 @@
 </object>
 </shared_ptr>
 </weak_ptr>
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+ <size>1</size>
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 <size>1</size>
- 3B52D5850D9664639CCF1D22FBD52F2EB99087BED704C3FE07FE185B38C0DD09
- <weak>676740550</weak>
- <size>15108</size>
- <position>321</position>
+ DE766B811244919E8E1EA54FC747A8487BCE57F1AB592932640FC90428B617A5
+ <weak>414875037</weak>
+ <size>427</size>
+ <position>323</position>
 </stream_hook_path>
 </hook>
 <file>
 <path>
 <empty>0</empty>
- <string>../../../../boost/exception/detail/exception_ptr.hpp</string>
+ <string>../../../../boost/exception/errinfo_file_open_mode.hpp</string>
 <type>0</type>
 <base>0</base>
 </path>
 </file>
 </hook>
 <title>
- <string>boost/exception_ptr.hpp</string>
+ <string>boost/exception/errinfo_file_open_mode.hpp</string>
 </title>
 <file_name>
 <string></string>
@@ -3077,15 +3063,19 @@
 <hook>
 <hook>
 <stream_hook_path>
- <size>2</size>
+ <size>3</size>
 ADCD0B47BEBAA82DE5FDCACB0E9E8FF900527566EF9865ECD8C08B62067B4C66
 <weak>1181168733</weak>
 <size>14302</size>
 <position>1027</position>
- EEDBDE62A278D2AF428D9D1ED2ABCFF06163BACD91E12DD033565C7043354B89
- <weak>246173488</weak>
- <size>248</size>
- <position>1396</position>
+ 97DB2EDAA38019314BA1A582664F8950F5208310F14BAB94E1880AE2C5F00CD4
+ <weak>3076716310</weak>
+ <size>959</size>
+ <position>2974</position>
+ 1760DA943E0DCAE6DDB000F3C08D6E6F5F8AEDBBEAC7CAA84A2ED60BFA4B0E1A
+ <weak>702729709</weak>
+ <size>815</size>
+ <position>145</position>
 </stream_hook_path>
 </hook>
 <file>
@@ -3098,7 +3088,7 @@
 </file>
 </hook>
 <title>
- <string>original_exception_type</string>
+ <string>unknown_exception</string>
 </title>
 <file_name>
 <string></string>
@@ -3132,10 +3122,10 @@
 </file>
 </hook>
 <title>
- <string>transporting of exceptions between threads</string>
+ <string>boost/exception/enable_error_info.hpp</string>
 </title>
 <file_name>
- <string>tutorial_exception_ptr</string>
+ <string></string>
 </file_name>
 </object>
 </shared_ptr>
@@ -3156,32 +3146,38 @@
 <hook>
 <hook>
 <stream_hook_path>
- <size>1</size>
- FC684D0DD5A9732B4130F2AB3DB6E0491D0F523E14B7FB738B2019EA2C7F8717
- <weak>2229778754</weak>
- <size>631</size>
- <position>319</position>
+ <size>2</size>
+ 126A895281064E2195458B8A47CD73DB7E3BE3608F250925E07AF4230CBDDE1D
+ <weak>4231421785</weak>
+ <size>307</size>
+ <position>344</position>
+ 16179B125E2BC6D993FBE4BA5E9A96DBAE43CA1443C7D281B659D020B6725983
+ <weak>1126376090</weak>
+ <size>92</size>
+ <position>209</position>
 </stream_hook_path>
 </hook>
 <file>
 <path>
 <empty>0</empty>
- <string>../../example/cloning_2.cpp</string>
+ <string>../../../../boost/exception/errinfo_type_info_name.hpp</string>
 <type>0</type>
 <base>0</base>
 </path>
 </file>
 </hook>
 <title>
- <string>cloning and re-throwing an exception</string>
+ <string>errinfo_type_info_name</string>
 </title>
 <file_name>
- <string>cloning_and_rethrowing</string>
+ <string></string>
 </file_name>
 </object>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>1</size>
+ <variant>2</variant>
+ <string>(:include include:)
(:auto also:)
</string>
 </pair>
 </sorted>
 </object>
@@ -3204,54 +3200,54 @@
 <id>-5</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <size>5</size>
+ <variant>2</variant>
+ <string>[@typedef (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-6</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string>:)<struct errinfo_api_function_,char const *> (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-5</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <variant>2</variant>
+ <string>:);@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-8</id>
+ <id>-6</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
- <variant>2</variant>
- <string>[@typedef </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
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 <shared_ptr>
- <id>-50</id>
+ <id>-7</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string><struct errinfo_errno_,int> </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
 <id>-8</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>;@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
@@ -3305,7 +3301,36 @@
 <id>-14</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>7</size>
+ <variant>2</variant>
+ <string>[@typedef (:link </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-54</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string>:)<struct errinfo_nested_exception_,(:link </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-69</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string>:)> (:link </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-14</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string>:);@]
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -3325,16 +3350,16 @@
 </weak_ptr>
 <size>5</size>
 <variant>2</variant>
- <string>[@typedef </string>
+ <string>[@typedef (:link </string>
 <variant>1</variant>
 <weak_ptr>
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 <shared_ptr>
- <id>-50</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string><struct errinfo_type_info_name_,std::string> </string>
+ <string>:)<struct errinfo_file_handle_,weak_ptr<FILE> > (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
@@ -3343,7 +3368,7 @@
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>;@]
</string>
+ <string>:);@]
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -3388,27 +3413,7 @@
 <id>-21</id>
 </shared_ptr>
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- <size>5</size>
- <variant>2</variant>
- <string>[@typedef (:link </string>
- <variant>1</variant>
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- <shared_ptr>
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- </shared_ptr>
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- <string>:)<struct errinfo_api_function_,char const *> (:link </string>
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- <weak_ptr>
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- <shared_ptr>
- <id>-21</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string>:);@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
@@ -3435,42 +3440,22 @@
 <id>-24</id>
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- <size>7</size>
- <variant>2</variant>
- <string>[@typedef (:link </string>
- <variant>1</variant>
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- <shared_ptr>
- <id>-50</id>
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- </weak_ptr>
- <variant>2</variant>
- <string>:)<struct errinfo_nested_exception_,(:link </string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-33</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string>:)> (:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-24</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:);@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-25</id>
+ <id>-26</id>
 </shared_ptr>
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 <size>0</size>
@@ -3479,36 +3464,34 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-26</id>
+ <id>-27</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
- <variant>2</variant>
- <string>[@typedef (:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)<struct errinfo_file_handle_,weak_ptr<FILE> > (:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-26</id>
+ <id>-29</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:);@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-30</id>
 </shared_ptr>
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 <size>0</size>
@@ -3517,7 +3500,7 @@
 <weak_ptr>
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 <shared_ptr>
- <id>-28</id>
+ <id>-31</id>
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@@ -3526,7 +3509,7 @@
 <weak_ptr>
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 <shared_ptr>
- <id>-29</id>
+ <id>-32</id>
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@@ -3535,7 +3518,7 @@
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 <shared_ptr>
- <id>-30</id>
+ <id>-33</id>
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@@ -3544,7 +3527,7 @@
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- <id>-31</id>
+ <id>-34</id>
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@@ -3553,7 +3536,7 @@
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- <id>-32</id>
+ <id>-35</id>
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@@ -3562,7 +3545,7 @@
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 <shared_ptr>
- <id>-33</id>
+ <id>-36</id>
 </shared_ptr>
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@@ -3571,36 +3554,34 @@
 <weak_ptr>
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 <shared_ptr>
- <id>-34</id>
+ <id>-37</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
- <variant>2</variant>
- <string>[@typedef </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-38</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string><struct errinfo_file_open_mode_,std::string> </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
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 <shared_ptr>
- <id>-34</id>
+ <id>-39</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>;@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
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 <shared_ptr>
- <id>-35</id>
+ <id>-40</id>
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@@ -3609,36 +3590,36 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-36</id>
+ <id>-41</id>
 </shared_ptr>
 </weak_ptr>
 <size>5</size>
 <variant>2</variant>
- <string>[@typedef (:link </string>
+ <string>[@typedef </string>
 <variant>1</variant>
 <weak_ptr>
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 <shared_ptr>
- <id>-50</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<struct errinfo_file_name_,std::string> (:link </string>
+ <string><struct errinfo_errno_,int> </string>
 <variant>1</variant>
 <weak_ptr>
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 <shared_ptr>
- <id>-36</id>
+ <id>-41</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:);@]
</string>
+ <string>;@]
</string>
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 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-37</id>
+ <id>-42</id>
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@@ -3647,7 +3628,7 @@
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- <id>-38</id>
+ <id>-43</id>
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@@ -3656,7 +3637,7 @@
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- <id>-39</id>
+ <id>-44</id>
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@@ -3665,7 +3646,7 @@
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- <id>-40</id>
+ <id>-45</id>
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@@ -3674,7 +3655,7 @@
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- <id>-41</id>
+ <id>-46</id>
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@@ -3683,7 +3664,7 @@
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 <shared_ptr>
- <id>-42</id>
+ <id>-47</id>
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@@ -3692,25 +3673,36 @@
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 <expired>0</expired>
 <shared_ptr>
- <id>-43</id>
+ <id>-48</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <size>5</size>
+ <variant>2</variant>
+ <string>[@typedef (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-44</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <variant>2</variant>
+ <string>:)<struct errinfo_file_name_,std::string> (:link </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-48</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string>:);@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-45</id>
+ <id>-49</id>
 </shared_ptr>
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 <size>0</size>
@@ -3719,7 +3711,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-46</id>
+ <id>-50</id>
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 <size>0</size>
@@ -3728,7 +3720,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-47</id>
+ <id>-51</id>
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@@ -3737,7 +3729,7 @@
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- <id>-48</id>
+ <id>-52</id>
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@@ -3746,7 +3738,7 @@
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 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
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 <size>7</size>
@@ -3756,7 +3748,7 @@
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 <expired>0</expired>
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- <id>-49</id>
+ <id>-53</id>
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 <variant>2</variant>
@@ -3765,7 +3757,7 @@
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 <expired>0</expired>
 <shared_ptr>
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+ <id>-20</id>
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 <variant>2</variant>
@@ -3774,7 +3766,7 @@
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 <expired>0</expired>
 <shared_ptr>
- <id>-28</id>
+ <id>-34</id>
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 <variant>2</variant>
@@ -3784,7 +3776,7 @@
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 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-54</id>
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 <size>9</size>
@@ -3794,7 +3786,7 @@
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- <id>-50</id>
+ <id>-54</id>
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 <variant>2</variant>
@@ -3803,7 +3795,7 @@
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 <expired>0</expired>
 <shared_ptr>
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+ <id>-9</id>
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 <variant>2</variant>
@@ -3812,7 +3804,7 @@
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+ <id>-55</id>
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 <variant>2</variant>
@@ -3821,7 +3813,7 @@
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 <shared_ptr>
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+ <id>-52</id>
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 <variant>2</variant>
@@ -3831,42 +3823,6 @@
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- <shared_ptr>
 <id>-55</id>
 </shared_ptr>
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@@ -3914,37 +3870,17 @@
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 <id>-60</id>
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- <string>[@typedef (:link </string>
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- <expired>0</expired>
- <shared_ptr>
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- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string>:)<struct errinfo_at_line_,int> (:link </string>
- <variant>1</variant>
+ </weak_ptr>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
 <id>-61</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:);@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
@@ -4025,7 +3961,27 @@
 <id>-70</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>5</size>
+ <variant>2</variant>
+ <string>[@typedef </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-54</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string><struct errinfo_file_open_mode_,std::string> </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-70</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string>;@]
</string>
 </pair>
 <pair>
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@@ -4052,7 +4008,27 @@
 <id>-73</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>5</size>
+ <variant>2</variant>
+ <string>[@typedef (:link </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-54</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string>:)<struct errinfo_at_line_,int> (:link </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-73</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string>:);@]
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -4106,7 +4082,27 @@
 <id>-79</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>5</size>
+ <variant>2</variant>
+ <string>[@typedef </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-54</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string><struct errinfo_type_info_name_,std::string> </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-79</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string>;@]
</string>
 </pair>
 </sorted>
 </object>
@@ -4129,6 +4125,24 @@
 <id>-5</id>
 </shared_ptr>
 </weak_ptr>
+ <size>0</size>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-6</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>0</size>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-7</id>
+ </shared_ptr>
+ </weak_ptr>
 <size>3</size>
 <variant>2</variant>
 <string>[@(:include </string>
@@ -4136,17 +4150,17 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-75</id>
+ <id>-16</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> decl:)@]
</string>
+ <string> def:)@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-6</id>
+ <id>-8</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4155,7 +4169,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-9</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4164,7 +4178,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-8</id>
+ <id>-10</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4173,32 +4187,30 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-9</id>
+ <id>-11</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
+ <size>33</size>
 <variant>2</variant>
- <string>[@(:include </string>
+ <string>[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-59</id>
+ <id>-64</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> decl:)@]
</string>
- </pair>
- <pair>
+ <string>:)>
#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
 <variant>2</variant>
- <string>[@(:include </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
@@ -4207,136 +4219,130 @@
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> def:)

(:include </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-60</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> decl:)@]
</string>
- </pair>
- <pair>
+ <string>:)>
#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-11</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string>:)>
#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-12</id>
+ <id>-37</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string>:)>
#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-13</id>
+ <id>-59</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string>:)>
#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-14</id>
+ <id>-15</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
 <variant>2</variant>
- <string>[@(:include </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-26</id>
+ <id>-40</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> def:)@]
</string>
- </pair>
- <pair>
+ <string>:)>
#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-15</id>
+ <id>-7</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string>:)>
#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-16</id>
+ <id>-66</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string>:)>
#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-17</id>
+ <id>-76</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
 <variant>2</variant>
- <string>[@(:include </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-44</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> decl:)

namespace
boost
 {
(:include </string>
+ <string>:)>
#ifndef (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-22</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> decl:)
 }@]
</string>
- </pair>
- <pair>
+ <string>|BOOST_NO_EXCEPTIONS:)
#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-18</id>
+ <id>-56</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
 <variant>2</variant>
- <string>[@(:include </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-8</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> def:)@]
</string>
+ <string>:)>
#endif@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-19</id>
+ <id>-12</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4345,7 +4351,25 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-20</id>
+ <id>-13</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>0</size>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-14</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>0</size>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-15</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -4355,7 +4379,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-16</id>
+ <id>-73</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -4365,7 +4389,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-21</id>
+ <id>-16</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4374,7 +4398,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-22</id>
+ <id>-17</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4383,45 +4407,45 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <size>3</size>
+ <variant>2</variant>
+ <string>[@(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-24</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <variant>2</variant>
+ <string> decl:)@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-25</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
- <variant>2</variant>
- <string>[@(:include </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-61</id>
+ <id>-20</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string> def:)@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-26</id>
+ <id>-21</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4430,7 +4454,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-22</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4439,7 +4463,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-28</id>
+ <id>-23</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4448,7 +4472,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-29</id>
+ <id>-24</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4457,36 +4481,36 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-30</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
+ <size>5</size>
 <variant>2</variant>
 <string>[@(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> decl:)@]
</string>
- </pair>
- <pair>
+ <string> def:)

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <variant>2</variant>
+ <string> decl:)@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-26</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4495,7 +4519,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-27</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4504,99 +4528,99 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-34</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <size>13</size>
+ <variant>2</variant>
+ <string>[@(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-35</id>
+ <id>-77</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string> decl:)

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-36</id>
+ <id>-29</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string> decl:)

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-37</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string> decl:)

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-12</id>
 </shared_ptr>
 </weak_ptr>
- <size>11</size>
 <variant>2</variant>
- <string>[@(:include </string>
+ <string> decl:)

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> def:)

(:include </string>
+ <string> decl:)

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-23</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> decl:)

typedef (:link </string>
- <variant>1</variant>
+ <string> decl:)@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-29</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)<struct throw_function_,char const *> throw_function;
typedef (:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-30</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)<struct throw_file_,char const *> throw_file;
typedef (:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-31</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)<struct throw_line_,int> throw_line;@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-39</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4605,7 +4629,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-40</id>
+ <id>-33</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4614,162 +4638,181 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-41</id>
+ <id>-34</id>
 </shared_ptr>
 </weak_ptr>
- <size>33</size>
- <variant>2</variant>
- <string>[@#include <(:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-72</id>
+ <id>-35</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)>
#include <(:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-36</id>
 </shared_ptr>
 </weak_ptr>
+ <size>3</size>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string>[@(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
- <variant>1</variant>
+ <string> decl:)@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-68</id>
+ <id>-37</id>
 </shared_ptr>
 </weak_ptr>
+ <size>3</size>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string>[@(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-27</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
- <variant>1</variant>
+ <string> decl:)@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-5</id>
+ <id>-38</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)>
#include <(:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-67</id>
+ <id>-39</id>
 </shared_ptr>
 </weak_ptr>
+ <size>5</size>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string>[@(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-25</id>
+ <id>-33</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string> decl:)

namespace
boost
 {
(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-18</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
- <variant>1</variant>
+ <string> decl:)
 }@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-14</id>
+ <id>-40</id>
 </shared_ptr>
 </weak_ptr>
+ <size>3</size>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string>[@(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-74</id>
+ <id>-41</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
- <variant>1</variant>
+ <string> def:)@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-64</id>
+ <id>-41</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)>
#include <(:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-20</id>
+ <id>-42</id>
 </shared_ptr>
 </weak_ptr>
+ <size>3</size>
 <variant>2</variant>
- <string>:)>
#ifndef (:link </string>
+ <string>[@(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-44</id>
+ <id>-71</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|BOOST_NO_EXCEPTIONS:)
#include <(:link </string>
- <variant>1</variant>
+ <string> decl:)@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-52</id>
+ <id>-43</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>0</size>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-44</id>
 </shared_ptr>
 </weak_ptr>
+ <size>3</size>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string>[@(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-76</id>
+ <id>-79</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#endif@]
</string>
+ <string> def:)@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-42</id>
+ <id>-45</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4778,7 +4821,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-43</id>
+ <id>-46</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4787,7 +4830,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-44</id>
+ <id>-47</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4796,7 +4839,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-45</id>
+ <id>-48</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4805,7 +4848,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-46</id>
+ <id>-49</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -4814,37 +4857,57 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-47</id>
+ <id>-50</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <size>11</size>
+ <variant>2</variant>
+ <string>[@(:include </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-53</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string> def:)

(:include </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-54</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string> decl:)

typedef (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-48</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string>:)<struct throw_function_,char const *> throw_function;
typedef (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string>:)<struct throw_file_,char const *> throw_file;
typedef (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <variant>2</variant>
+ <string>:)<struct throw_line_,int> throw_line;@]
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -4862,18 +4925,7 @@
 <id>-52</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
- <variant>2</variant>
- <string>[@(:include </string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-24</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string> def:)@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
@@ -4916,11 +4968,11 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-14</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> decl:)@]
</string>
+ <string> def:)@]
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -4947,7 +4999,18 @@
 <id>-59</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>3</size>
+ <variant>2</variant>
+ <string>[@(:include </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-5</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string> def:)@]
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -4956,7 +5019,18 @@
 <id>-60</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>3</size>
+ <variant>2</variant>
+ <string>[@(:include </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-68</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string> decl:)@]
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -4992,53 +5066,51 @@
 <id>-64</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
+ <size>7</size>
 <variant>2</variant>
 <string>[@(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-34</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> def:)@]
</string>
- </pair>
- <pair>
+ <string> decl:)

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-65</id>
+ <id>-38</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string> decl:)

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-66</id>
+ <id>-47</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
 <variant>2</variant>
- <string>[@(:include </string>
- <variant>1</variant>
+ <string> decl:)@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-71</id>
+ <id>-65</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string> decl:)@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-67</id>
+ <id>-66</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -5048,7 +5120,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-21</id>
+ <id>-48</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -5058,21 +5130,19 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-68</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
- <variant>2</variant>
- <string>[@(:include </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string> decl:)@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
@@ -5108,42 +5178,31 @@
 <id>-72</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
- <variant>2</variant>
- <string>[@(:include </string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-23</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string> decl:)

(:include </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-6</id>
+ <id>-73</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string> decl:)

(:include </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-35</id>
+ <id>-74</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string> decl:)@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-73</id>
+ <id>-75</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -5152,7 +5211,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-74</id>
+ <id>-76</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -5162,7 +5221,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-36</id>
+ <id>-70</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -5172,7 +5231,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-75</id>
+ <id>-77</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -5181,113 +5240,115 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-76</id>
+ <id>-78</id>
 </shared_ptr>
 </weak_ptr>
- <size>13</size>
+ <size>3</size>
 <variant>2</variant>
 <string>[@(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-65</id>
+ <id>-63</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> decl:)

(:include </string>
- <variant>1</variant>
+ <string> decl:)@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-77</id>
+ <id>-79</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string> decl:)

(:include </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ </sorted>
+ </object>
+ </shared_ptr>
+ </pair>
+ <pair>
+ <string>decl</string>
+ <shared_ptr>
+ <id>82</id>
+ <type>
+ <string>reno_layer</string>
+ </type>
+ <object>
+ <sorted>
+ <size>75</size>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-5</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string> decl:)

(:include </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-42</id>
+ <id>-6</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string> decl:)

(:include </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-7</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string> decl:)

(:include </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-45</id>
+ <id>-8</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string> decl:)@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-77</id>
+ <id>-9</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <size>3</size>
+ <variant>2</variant>
+ <string>[@typedef T (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-78</id>
+ <id>-9</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <variant>2</variant>
+ <string> mod="m":);@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-79</id>
+ <id>-10</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
 </pair>
- </sorted>
- </object>
- </shared_ptr>
- </pair>
- <pair>
- <string>decl</string>
- <shared_ptr>
- <id>82</id>
- <type>
- <string>reno_layer</string>
- </type>
- <object>
- <sorted>
- <size>75</size>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-5</id>
+ <id>-11</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -5296,74 +5357,74 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-6</id>
+ <id>-12</id>
 </shared_ptr>
 </weak_ptr>
 <size>5</size>
 <variant>2</variant>
- <string>[@char const * (:link </string>
+ <string>[@template <class T>
(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-6</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)( boost::(:link </string>
+ <string>:) (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-12</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) const & e, bool verbose=true ) throw();@]
</string>
+ <string>:)( T const & e );@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
+ <size>7</size>
 <variant>2</variant>
- <string>[@template <class T>
---unspecified--- (:link </string>
+ <string>[@template <class E>
std::string (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)( T const & e );@]
</string>
- </pair>
- <pair>
+ <string>:)( E const & e, bool verbose=true );

std::string (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-8</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string>:)( (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-9</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <variant>2</variant>
+ <string>:) const & p, bool verbose=true );@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-14</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -5372,7 +5433,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-11</id>
+ <id>-15</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -5381,7 +5442,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-12</id>
+ <id>-16</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -5390,7 +5451,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-13</id>
+ <id>-17</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -5399,7 +5460,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-14</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -5408,70 +5469,74 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-15</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <size>5</size>
+ <variant>2</variant>
+ <string>[@template <class E, class Tag, class T>
E const & (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-16</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string> mod="/":)( E const & x, (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-17</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <variant>2</variant>
+ <string>:)<Tag,T> const & v );@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-18</id>
+ <id>-20</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <size>7</size>
+ <variant>2</variant>
+ <string>[@(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-19</id>
+ <id>-20</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string> mod="m":)();
(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
 <id>-20</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string> mod="m":)( (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-21</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <variant>2</variant>
+ <string>:) const & x );@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-22</id>
+ <id>-21</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -5480,21 +5545,21 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-22</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
- <variant>2</variant>
- <string>[@template <class E>
std::string (:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
 <id>-23</id>
 </shared_ptr>
 </weak_ptr>
+ <size>5</size>
 <variant>2</variant>
- <string>:)( E const & e, bool verbose=true );

std::string (:link </string>
+ <string>[@void (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
@@ -5508,11 +5573,11 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) const & p, bool verbose=true );@]
</string>
+ <string>:) const & ep );</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -5548,188 +5613,195 @@
 <id>-27</id>
 </shared_ptr>
 </weak_ptr>
- <size>21</size>
+ <size>7</size>
 <variant>2</variant>
- <string>[@#if !defined( BOOST_EXCEPTION_DISABLE )
 #include <(:link </string>
+ <string>[@template <class E, class Tag1, class T1, ..., class TagN, class TN>
E const & (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-27</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
 #include <boost/current_function.hpp>
 #define (:link </string>
+ <string> mod="/":)( E const & x,
 (:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html|tuple:)<
 (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(x)\
 ::boost::(:link </string>
+ <string>:)<Tag1,T1>,
 ...,
 (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)( ::boost::(:link </string>
- <variant>1</variant>
+ <string>:)<TagN,TN> > const & v );@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-71</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)(x) <<\
 ::boost::(:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-29</id>
 </shared_ptr>
 </weak_ptr>
+ <size>5</size>
 <variant>2</variant>
- <string>|throw_function:)((:link </string>
+ <string>[@typedef (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-44</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|BOOST_THROW_EXCEPTION_CURRENT_FUNCTION:)) <<\
 ::boost::(:link </string>
+ <string>:)<struct tag_original_exception_type,std::type_info const *> </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-29</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|throw_file:)(__FILE__) <<\
 ::boost::(:link </string>
- <variant>1</variant>
+ <string>;@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-30</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>|throw_line:)((int)__LINE__) )
#else
 #define (:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-31</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>0</size>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
+ <size>3</size>
 <variant>2</variant>
- <string>:)(x) ::boost::(:link </string>
+ <string>[@template <class T>
---unspecified--- (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(x)
#endif@]
</string>
+ <string>:)( T const & e );@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-28</id>
+ <id>-33</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
+ <size>21</size>
 <variant>2</variant>
- <string>[@(:link </string>
+ <string>[@#if !defined( BOOST_EXCEPTION_DISABLE )
 #include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-28</id>
+ <id>-50</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="m":)();@]
</string>
- </pair>
- <pair>
+ <string>:)>
 #include <boost/current_function.hpp>
 #define (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-29</id>
+ <id>-33</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string>:)(x)\
 ::boost::(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-30</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string>:)( ::boost::(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-63</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
 <variant>2</variant>
- <string>[@#ifdef BOOST_NO_EXCEPTIONS
 void (:link </string>
+ <string>:)(x) <<\
 ::boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-50</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)( std::exception const & e ); // user defined
#else
 template <class E>
 void (:link </string>
+ <string>|throw_function:)((:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-22</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)( E const & e );
#endif@]
</string>
- </pair>
- <pair>
+ <string>|BOOST_THROW_EXCEPTION_CURRENT_FUNCTION:)) <<\
 ::boost::(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-50</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>[@template <class ErrorInfo,class E>
typename ErrorInfo::(:link error_info::value_type mod="m":) const * (:link get_error_info:)( E const & x );

template <class ErrorInfo,class E>
typename ErrorInfo::(:link error_info::value_type mod="m":) * (:link get_error_info:)( E & x );@]
</string>
- </pair>
- <pair>
+ <string>|throw_file:)(__FILE__) <<\
 ::boost::(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-50</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
 <variant>2</variant>
- <string>[@typedef ---unspecified--- (:link </string>
+ <string>|throw_line:)((int)__LINE__) )
#else
 #define (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
@@ -5738,36 +5810,45 @@
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:);@]
</string>
- </pair>
- <pair>
+ <string>:)(x) ::boost::(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-34</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <variant>2</variant>
+ <string>:)(x)
#endif@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-35</id>
+ <id>-34</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>[@std::string (:link </string>
+ <string>[@(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
+ <id>-34</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string> mod="m":)();@]
</string>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
 <id>-35</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)();@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
@@ -5794,27 +5875,36 @@
 <id>-38</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <size>5</size>
+ <variant>2</variant>
+ <string>[@char const * (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-39</id>
+ <id>-38</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
 <variant>2</variant>
- <string>[@typedef T (:link </string>
+ <string>:)( boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-39</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="m":);@]
</string>
+ <string>:) const & e, bool verbose=true ) throw();@]
</string>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-39</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
@@ -5841,33 +5931,31 @@
 <id>-42</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
- <variant>2</variant>
- <string>[@template <class T>
(:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-43</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:) (:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-42</id>
+ <id>-44</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)( T const & e );@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-43</id>
+ <id>-45</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -5876,7 +5964,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-44</id>
+ <id>-46</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -5885,36 +5973,36 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-45</id>
+ <id>-47</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
+ <size>3</size>
 <variant>2</variant>
- <string>[@void (:link </string>
+ <string>[@std::string (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-45</id>
+ <id>-47</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)( (:link </string>
- <variant>1</variant>
+ <string>:)();@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-48</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:) const & ep );</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-46</id>
+ <id>-49</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -5923,7 +6011,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-47</id>
+ <id>-50</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -5932,7 +6020,16 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-48</id>
+ <id>-51</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>0</size>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-52</id>
 </shared_ptr>
 </weak_ptr>
 <size>9</size>
@@ -5942,7 +6039,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-39</id>
+ <id>-9</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -5951,7 +6048,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-48</id>
+ <id>-52</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -5960,7 +6057,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-39</id>
+ <id>-9</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -5969,7 +6066,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-48</id>
+ <id>-52</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -5979,7 +6076,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -5989,7 +6086,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -5999,7 +6096,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -6009,7 +6106,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -6019,7 +6116,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-51</id>
+ <id>-55</id>
 </shared_ptr>
 </weak_ptr>
 <size>5</size>
@@ -6029,7 +6126,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-51</id>
+ <id>-55</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -6038,7 +6135,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-39</id>
+ <id>-9</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -6048,7 +6145,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-52</id>
+ <id>-56</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -6057,7 +6154,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-53</id>
+ <id>-57</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -6066,7 +6163,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-54</id>
+ <id>-58</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -6075,7 +6172,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-55</id>
+ <id>-59</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -6084,7 +6181,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-60</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -6093,112 +6190,65 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
- </shared_ptr>
- </weak_ptr>
- <size>5</size>
- <variant>2</variant>
- <string>[@template <class E, class Tag, class T>
E const & (:link </string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-57</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string> mod="/":)( E const & x, (:link </string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-50</id>
+ <id>-61</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)<Tag,T> const & v );@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-58</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
+ <size>5</size>
 <variant>2</variant>
 <string>[@(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-58</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string> mod="m":)();
(:link </string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-58</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="m":)( (:link </string>
+ <string>:) (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) const & x );@]
</string>
+ <string>:)();@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-59</id>
+ <id>-63</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>[@template <class E>
E * </string>
+ <string>[@template <class T>
---unspecified--- (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-59</id>
+ <id>-63</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>();@]
</string>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-60</id>
- </shared_ptr>
- </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-61</id>
- </shared_ptr>
- </weak_ptr>
- <size>0</size>
+ <string>:)( T const & x );@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-62</id>
+ <id>-64</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -6207,7 +6257,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-63</id>
+ <id>-65</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -6216,7 +6266,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-64</id>
+ <id>-66</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -6225,48 +6275,30 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-65</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <size>5</size>
 <variant>2</variant>
- <string>[@class
(:link </string>
+ <string>[@#ifdef BOOST_NO_EXCEPTIONS
 void (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-65</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:):
 public std::exception
 public boost::</string>
+ <string>:)( std::exception const & e ); // user defined
#else
 template <class E>
 void (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string>
 {
 ---unspecified---
 };@]
</string>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-66</id>
- </shared_ptr>
- </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
 <id>-67</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <variant>2</variant>
+ <string>:)( E const & e );
#endif@]
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -6275,7 +6307,9 @@
 <id>-68</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>1</size>
+ <variant>2</variant>
+ <string>[@template <class ErrorInfo,class E>
typename ErrorInfo::(:link error_info::value_type mod="m":) const * (:link get_error_info:)( E const & x );

template <class ErrorInfo,class E>
typename ErrorInfo::(:link error_info::value_type mod="m":) * (:link get_error_info:)( E & x );@]
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -6284,36 +6318,27 @@
 <id>-69</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-70</id>
- </shared_ptr>
- </weak_ptr>
- <size>5</size>
+ <size>3</size>
 <variant>2</variant>
- <string>[@(:link </string>
+ <string>[@typedef ---unspecified--- (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) (:link </string>
- <variant>1</variant>
+ <string>:);@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
 <id>-70</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)();@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
@@ -6324,7 +6349,7 @@
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>[@template <class T>
---unspecified--- (:link </string>
+ <string>[@template <class E>
E * </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
@@ -6333,7 +6358,7 @@
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)( T const & x );@]
</string>
+ <string>();@]
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -6369,36 +6394,7 @@
 <id>-75</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
- <variant>2</variant>
- <string>[@template <class E, class Tag1, class T1, ..., class TagN, class TN>
E const & (:link </string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-75</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string> mod="/":)( E const & x,
 (:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html|tuple:)<
 (:link </string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-50</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string>:)<Tag1,T1>,
 ...,
 (:link </string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-50</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string>:)<TagN,TN> > const & v );@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
@@ -6418,25 +6414,25 @@
 </weak_ptr>
 <size>5</size>
 <variant>2</variant>
- <string>[@typedef (:link </string>
+ <string>[@class
(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-77</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<struct tag_original_exception_type,std::type_info const *> </string>
+ <string>:):
 public std::exception
 public boost::</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-77</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>;@]
</string>
+ <string>
 {
 ---unspecified---
 };@]
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -6477,282 +6473,236 @@
 <id>-5</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
- <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-6</id>
- </shared_ptr>
- </weak_ptr>
 <size>7</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

The (:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-6</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) function is intended to be called from a user-defined std::exception::what() override. This allows diagnostic information to be returned as the what() string.

!!!!Returns:

A pointer to a zero-terminated buffer that contains a string similar to the std::string returned by the (:link </string>
+ <string>:) instance for transporting the name of a relevant API function (which does not use exceptions to report errors) in exceptions deriving from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) function, or null to indicate a failure.

!!!!Throws:

Nothing.

!!!!Note:

The returned pointer becomes invalid if any (:link </string>
+ <string>:).

!!!Example:

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-46</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) is modified or added to the exception object, or if another diagnostic information function is called.
</string>
+ <string>:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-6</id>
 </shared_ptr>
 </weak_ptr>
- <size>21</size>
+ <size>69</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

* T must be a class with an accessible no-throw copy constructor.
* If T has any virtual base types, those types must have an accessible default constructor.

!!!!Returns:

An object of ''unspecified'' type which derives publicly from T. That is, the returned object can be intercepted by a catch(T &).

!!!!Description:



This function is designed to be used directly in a throw-expression to enable the (:link </string>
+ <string>!!Introduction

The purpose of Boost Exception is to ease the design of exception class hierarchies and to help write exception handling and error reporting code.

It supports transporting of arbitrary data to the catch site, which is otherwise tricky due to the no-throw requirements (15.5.1) for exception types. Data can be added to any exception object, either directly in the throw-expression (15.1), or at a later time as the exception object propagates up the call stack.

The ability to add data to exception objects after they have been passed to throw is important, because often some of the information needed to handle an exception is unavailable in the context where the failure is detected. 

Boost Exception also supports (:link http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2179.html|N2179:)-style (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-30</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) support in Boost Exception. For example:

[@class
my_exception:
 public std::exception
 {
 };

....
throw boost::(:link </string>
+ <string>|copying:) of exception objects, implemented non-intrusively and automatically by the boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(my_exception());@]

Unless (:link </string>
+ <string>:) function.

!!Contents

#(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-57</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) is called at the time an exception object is used in a throw-expression, an attempt to copy it using (:link </string>
+ <string>:)
#Tutorial
##(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-49</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) may return an (:link </string>
+ <string> mod="w":)
##(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-58</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) which refers to an instance of (:link </string>
+ <string> mod="w":)
##(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-65</id>
+ <id>-30</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:). See (:link </string>
+ <string> mod="w":)
##(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-45</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) for details.

!!!!Note:

Instead of using the throw keyword directly, it is preferable to call boost::(:link </string>
+ <string> mod="w":)
##(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-24</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:). This is guaranteed to throw an exception that derives from boost::(:link </string>
+ <string> mod="w":)
##(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-26</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) and supports the (:link </string>
+ <string> mod="w":)
#Documentation
##Class (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string>:) functionality.
</string>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-8</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard (:link </string>
+ <string>:)
##Throwing Exceptions
###(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-33</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) instance for transporting a relevant errno value in exceptions deriving from boost::(:link </string>
+ <string>:)
###(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).

!!!Example:

(:include </string>
+ <string>:)
##Transporting of Arbitrary Data to the Catch Site
###(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-13</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string>:)
</string>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-9</id>
- </shared_ptr>
- </weak_ptr>
- <size>1</size>
- <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-10</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
+ <string>:)
###(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-11</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
- <size>19</size>
 <variant>2</variant>
- <string>(:auto !!:)

Boost Exception provides a namespace-scope function (:link </string>
+ <string>:)
###(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-27</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) which takes a boost::(:link </string>
+ <string>:)
###(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:). The returned string contains:

*the string representation of all data objects added to the boost::(:link </string>
+ <string>:)
###(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-63</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) through (:link </string>
+ <string>:)
##(:link http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2179.html|N2179:) Transporting of Exceptions between Threads
###(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="/":);
*the output from std::exception::what;
*additional platform-specific diagnostic information.

The returned string is not presentable as a friendly user message, but because it is generated automatically, it is useful for debugging or logging purposes. Here is an example:

[@#include <(:link </string>
+ <string>:)
###(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-41</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <iostream>

void f(); //throws unknown types that derive from boost::(:link </string>
+ <string>:)
###(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).

void
g()
 {
 try
 {
 f();
 }
 catch(
 boost::(:link </string>
+ <string>:)
###(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-12</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) & e )
 {
 std::cerr << (:link </string>
+ <string>:)
###(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
@@ -6761,409 +6711,405 @@
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(e);
 }
 }@]

(:include </string>
+ <string>:)
###(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-60</id>
+ <id>-77</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
</string>
- </pair>
- <pair>
+ <string>:)
##Diagnostic Information
###(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-12</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
 <variant>2</variant>
- <string>(:auto !!!:)

Deriving from boost::(:link </string>
+ <string>:)
###(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-47</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) effectively decouples the semantics of a failure from the information that is relevant to each individual instance of reporting a failure with a given semantic.

In other words: with boost::(:link </string>
+ <string>:)
##(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-71</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:), what data a given exception object transports depends primarily on the context in which failures are reported (not on its type.) Since exception types need no members, it becomes very natural to throw exceptions that derive from more than one type to indicate multiple appropriate semantics:

[@struct exception_base: virtual std::exception, virtual boost::(:link </string>
+ <string>:)
#API
##(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-21</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) { };
struct io_error: virtual exception_base { };
struct file_error: virtual io_error { };
struct read_error: virtual io_error { };
struct file_read_error: virtual file_error, virtual read_error { };@]

Using this approach, exception types become a simple tagging system for categorizing errors and selecting failures in exception handlers.
</string>
- </pair>
- <pair>
+ <string>:)
##(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-13</id>
+ <id>-35</id>
 </shared_ptr>
 </weak_ptr>
- <size>37</size>
 <variant>2</variant>
- <string>[@#include <(:link </string>
+ <string>:)
##(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-67</id>
+ <id>-8</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string>:)
##(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-25</id>
+ <id>-10</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string>:)
##(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-18</id>
+ <id>-61</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string>:)
##(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-14</id>
+ <id>-22</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string> mod="w":)
#(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-74</id>
+ <id>-17</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string> mod="w":)
#(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-64</id>
+ <id>-74</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
- <variant>1</variant>
+ <string> mod="w":)

!!!Acknowledgements

Thanks to Peter Dimov for his continuing help. Also thanks to Tobias Schwinger, Tom Brinkman, Pavel Vozenilek and everyone who participated in the review process.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-7</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
- <variant>1</variant>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-17</id>
+ <id>-8</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:)>
#include <boost/shared_ptr.hpp>
#include <boost/weak_ptr.hpp>
#include <stdio.h>
#include <errno.h>
#include <exception>

struct error : virtual std::exception, virtual boost::(:link </string>
- <variant>1</variant>
+ <string>(:auto !!:)

(:pagelist fmt="index" tags="type":)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-9</id>
 </shared_ptr>
 </weak_ptr>
+ <size>5</size>
 <variant>2</variant>
- <string>:) { };
struct file_error : virtual error { };
struct file_open_error: virtual file_error { };
struct file_read_error: virtual file_error { };

boost::shared_ptr<FILE>
open_file( char const * file, char const * mode )
 {
 if( FILE * f=fopen(file,mode) )
 return boost::shared_ptr<FILE>(f,fclose);
 else
 (:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Definition:

The expression </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(
 file_open_error() <<
 boost::(:link </string>
+ <string><Tag,T>::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-21</id>
+ <id>-9</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)("fopen") <<
 boost::(:link </string>
- <variant>1</variant>
+ <string> mod="m":) evaluates to T.</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-8</id>
+ <id>-10</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:)(errno) <<
 boost::(:link </string>
- <variant>1</variant>
+ <string>(:auto !!:)

(:pagelist fmt="index" tags="function":)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-36</id>
+ <id>-11</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:)(file) <<
 boost::(:link </string>
- <variant>1</variant>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-34</id>
+ <id>-12</id>
 </shared_ptr>
 </weak_ptr>
+ <size>5</size>
 <variant>2</variant>
- <string>:)(mode) );
 }

size_t
read_file( boost::shared_ptr<FILE> const & f, void * buf, size_t size )
 {
 size_t nr=fread(buf,1,size,f.get());
 if( ferror(f.get()) )
 (:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Effects:

As if

[@try
 {
 throw </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(
 file_read_error() <<
 boost::(:link </string>
+ <string>(e);
 }
catch(...)
 {
 return (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-21</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)("fread") <<
 boost::(:link </string>
- <variant>1</variant>
+ <string>:)();
 }@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-8</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
+ <size>39</size>
 <variant>2</variant>
- <string>:)(errno) <<
 boost::(:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Returns:

A string value that contains varying amount of diagnostic information about the passed object:

* If E can be statically converted to either boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-26</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(f) );
 return nr;
 }@]
</string>
- </pair>
- <pair>
+ <string>:) or to std::exception, dynamic_cast is used to access both the boost::(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-14</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
+ <string>:) and std::exception subobjects of e; otherwise, the boost::(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-15</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

(:pagelist fmt="index" tags="type":)
</string>
- </pair>
- <pair>
+ <string>:) template is not available.
* The returned value contains the string representations of all (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-16</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard </string>
+ <string>:) objects stored in the boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> instance for transporting strings returned by std::type_info::name in exceptions deriving from boost::</string>
+ <string>:) subobject through (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> objects.</string>
- </pair>
- <pair>
+ <string> mod="/":).
* In addition, if verbose is true, it contains other diagnostic information relevant to the exception, including the string returned by std::exception::what().

The string representation of each (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-17</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
+ <string>:) object is deduced by an unqualified call to to_string(x), where x is of type (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-18</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
+ <string>:)<Tag,T>, for which Boost Exception defines a generic overload. It converts x.(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-19</id>
+ <id>-52</id>
 </shared_ptr>
 </weak_ptr>
- <size>19</size>
 <variant>2</variant>
- <string>(:auto !!!:)

The code snippet below demonstrates how boost::(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html|tuple:) can be used to bundle the name of the function that failed, together with the reported errno so that they can be added to exception objects more conveniently together:

[@#include <(:link </string>
+ <string> mod="m":)() to string, attempting to bind (at the time the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-5</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string>:)<Tag,T> template is instantiated) the following functions in order:

#Unqualified call to to_string(x.(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-74</id>
+ <id>-52</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string> mod="m":)()) (the return value is expected to be of type std::string.)
#Unqualified call to s << x.(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-67</id>
+ <id>-52</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string> mod="m":)(), where s is a std::ostringstream.

The first successfully bound function is used at the time (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-18</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <boost/shared_ptr.hpp>
#include <stdio.h>
#include <string>
#include <errno.h>

typedef boost::(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html|tuple:)<boost::(:link </string>
+ <string>:) is called; if both overload resolutions are unsuccessful, the system is unable to convert the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-21</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:),boost::(:link </string>
+ <string>:) object to string, and ''an unspecified stub string value is used without issuing a compile error.''

The (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-8</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)> clib_failure;

struct file_open_error: virtual boost::(:link </string>
+ <string>:) overload of (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) { };

boost::shared_ptr<FILE>
file_open( char const * name, char const * mode )
 {
 if( FILE * f=fopen(name,mode) )
 return boost::shared_ptr<FILE>(f,fclose);
 else
 throw file_open_error() <<
 boost::(:link </string>
+ <string>:) is equivalent to:

[@if( p )
 try
 {
 (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-36</id>
+ <id>-23</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(name) <<
 clib_failure("fopen",errno);
 }@]

Note that the members of a boost::(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html|tuple:) are stored separately in exception objects; they can only be retrieved individually, using (:link </string>
+ <string>:)(p);
 }
 catch(...)
 {
 return (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-47</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).
</string>
- </pair>
- <pair>
+ <string>:)(verbose);
 }
else return <unspecified-string-value>;@]

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-20</id>
+ <id>-72</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ <string>:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-21</id>
+ <id>-14</id>
 </shared_ptr>
 </weak_ptr>
 <size>7</size>
@@ -7173,58 +7119,60 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) instance for transporting the name of a relevant API function (which does not use exceptions to report errors) in exceptions deriving from boost::(:link </string>
+ <string>:) instance for transporting (in exceptions deriving from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).

!!!Example:

(:include </string>
+ <string>:)) an </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-13</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
</string>
+ <string> to an exception nested into another exception.
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-22</id>
+ <id>-15</id>
 </shared_ptr>
 </weak_ptr>
- <size>69</size>
+ <size>1</size>
 <variant>2</variant>
- <string>!!Introduction

The purpose of Boost Exception is to ease the design of exception class hierarchies and to help write exception handling and error reporting code.

It supports transporting of arbitrary data to the catch site, which is otherwise tricky due to the no-throw requirements (15.5.1) for exception types. Data can be added to any exception object, either directly in the throw-expression (15.1), or at a later time as the exception object propagates up the call stack.

The ability to add data to exception objects after they have been passed to throw is important, because often some of the information needed to handle an exception is unavailable in the context where the failure is detected. 

Boost Exception also supports (:link http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2179.html|N2179:)-style (:link </string>
- <variant>1</variant>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-78</id>
+ <id>-16</id>
 </shared_ptr>
 </weak_ptr>
+ <size>7</size>
 <variant>2</variant>
- <string>|copying:) of exception objects, implemented non-intrusively and automatically by the boost::(:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) function.

!!Contents

#(:link </string>
+ <string>:) instance for transporting a relevant FILE pointer managed by a boost::shared_ptr<FILE> in exceptions deriving from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
@@ -7233,133 +7181,135 @@
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
#Tutorial
##(:link </string>
+ <string>:).

!!!Example:

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-37</id>
+ <id>-46</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="w":)
##(:link </string>
- <variant>1</variant>
+ <string>:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-54</id>
+ <id>-17</id>
 </shared_ptr>
 </weak_ptr>
+ <size>81</size>
 <variant>2</variant>
- <string> mod="w":)
##(:link </string>
+ <string>(:auto !!:)

!!!What is the cost of calling boost::throw_exception?

The cost is that boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-78</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="w":)
##(:link </string>
+ <string>:) is added as a base of the exception emitted by boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-12</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="w":)
##(:link </string>
+ <string>:) (unless the passed type already derives from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-46</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="w":)
##(:link </string>
+ <string>:).)

Calling boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-11</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="w":)
#Documentation
##Class (:link </string>
+ <string>:) does not cause dynamic memory allocations.

!!!What is the cost of BOOST_THROW_EXCEPTION?

In addition to calling boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
##Throwing Exceptions
###(:link </string>
+ <string>:), </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-33</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
###(:link </string>
+ <string> invokes __FILE__, __LINE__ and the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-22</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
##Transporting of Arbitrary Data to the Catch Site
###(:link </string>
+ <string>|BOOST_THROW_EXCEPTION_CURRENT_FUNCTION:) macros. The space required to store the information is already included in sizeof(boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
###(:link </string>
+ <string>:)).

Calling </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-33</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
###(:link </string>
+ <string> does not cause dynamic memory allocations.

!!!Should I use boost::throw_exception or BOOST_THROW_EXCEPTION or just throw?

The benefit of calling boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-75</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
###(:link </string>
+ <string>:) instead of using throw directly is that it ensures that the emitted exception derives from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
###(:link </string>
+ <string>:) and that it is compatible with boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-71</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
##(:link http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2179.html|N2179:) Transporting of Exceptions between Threads
###(:link </string>
+ <string>:).

The (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
@@ -7368,344 +7318,348 @@
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
###(:link </string>
+ <string>:) macro also results in a call to boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
###(:link </string>
+ <string>:), but in addition it records in the exception object the __FILE__ and __LINE__ of the throw, as well as the pretty name of the function that throws. This enables boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
###(:link </string>
+ <string>:) to compose a more useful, if not user-friendly message.

Typical use of boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-42</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
###(:link </string>
+ <string>:) is:

[@catch(...)
 {
 std::cerr <<
 "Unexpected exception, diagnostic information follows:\n" <<
 </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-45</id>
+ <id>-47</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
###(:link </string>
+ <string>();
 }@]

This is a possible message it may display -- the information in the first line is only available if (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-65</id>
+ <id>-33</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
##Diagnostic Information
###(:link </string>
+ <string>:) was used to throw:

[@example_io.cpp(70): Throw in function class boost::shared_ptr<struct _iobuf> __cdecl my_fopen(const char *,const char *)
Dynamic exception type: class boost::exception_detail::clone_impl<class fopen_error>
std::exception::what: example_io error
[struct boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-5</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
###(:link </string>
+ <string>:)_ *] = fopen
[struct boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-35</id>
+ <id>-41</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
##(:link </string>
+ <string>:)_ *] = 2, "No such file or directory"
[struct boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-59</id>
+ <id>-48</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
#API
##(:link </string>
+ <string>:)_ *] = tmp1.txt
[struct boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-43</id>
+ <id>-70</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
##(:link </string>
+ <string>:)_ *] = rb@]

In some development environments, the first line in that message can be clicked to show the location of the throw in the debugger, so it's easy to set a break point and run again to see the unexpected throw in the context of its call stack.

!!!Why doesn't boost::exception derive from std::exception?

Despite that (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-29</id>
+ <id>-24</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
##(:link </string>
+ <string>|virtual inheritance should be used in deriving from base exception types:), quite often exception types (including the ones defined in the standard library) don't derive from std::exception virtually.

If boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-15</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
##(:link </string>
+ <string>:) derives from std::exception, using the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-40</id>
+ <id>-63</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
##(:link </string>
+ <string>:) function with such user-defined types would introduce dangerous ambiguity which would break all catch(std::exception &) statements.

Of course, boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-69</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
##(:link </string>
+ <string>:) should not be used to replace std::exception as a base type in exception type hierarchies. Instead, it should be included as a virtual base, in addition to std::exception (which should probably also be derived virtually.)

!!!Why is boost::exception abstract?

To prevent exception-neutral contexts from erroneously erasing the type of the original exception when adding (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-44</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="w":)
#(:link </string>
+ <string>:) to an active exception object:

[@catch( boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-55</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="w":)
#(:link </string>
+ <string>:) & e )
 {
 e (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-62</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="w":)

!!!Acknowledgements

Thanks to Peter Dimov for his continuing help. Also thanks to Tobias Schwinger, Tom Brinkman, Pavel Vozenilek and everyone who participated in the review process.
</string>
- </pair>
- <pair>
+ <string>|<<:) foo_info(foo);
 throw e; //Compile error: boost::(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
- <size>39</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Returns:

A string value that contains varying amount of diagnostic information about the passed object:

* If E can be statically converted to either boost::(:link </string>
+ <string>:) is abstract
 }@]

The correct code is:

[@catch( boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) or to std::exception, dynamic_cast is used to access both the boost::(:link </string>
+ <string>:) & e )
 {
 e (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) and std::exception subobjects of e; otherwise, the boost::(:link </string>
+ <string>|<<:) foo_info(foo);
 throw; //Okay, re-throwing the original exception object.
 }@]

!!!Why use operator<< overload for adding info to exceptions?

Before throwing an object of type that derives from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) template is not available.
* The returned value contains the string representations of all (:link </string>
+ <string>:), it is often desirable to add one or more (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) objects stored in the boost::(:link </string>
+ <string>:) objects in it. The syntactic sugar provided by (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) subobject through (:link </string>
+ <string> mod="/":) allows this to be done directly in a throw expression:

[@throw error() (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="/":).
* In addition, if verbose is true, it contains other diagnostic information relevant to the exception, including the string returned by std::exception::what().

The string representation of each (:link </string>
+ <string>|<<:) foo_info(foo) (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) object is deduced by an unqualified call to to_string(x), where x is of type (:link </string>
+ <string>|<<:) bar_info(bar);@]

!!!Why is operator<< allowed to throw?

This question is referring to the following issue. Consider this throw statement example:

[@throw file_open_error() (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<Tag,T>, for which Boost Exception defines a generic overload. It converts x.(:link </string>
+ <string>|<<:) file_name(fn);@]

The intention here is to throw a file_open_error, however if (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-48</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="m":)() to string, attempting to bind (at the time the (:link </string>
+ <string> mod="/":) fails to copy the std::string contained in the file_name (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<Tag,T> template is instantiated) the following functions in order:

#Unqualified call to to_string(x.(:link </string>
- <variant>1</variant>
+ <string>:) wrapper, a std::bad_alloc could propagate instead. This behavior seems undesirable to some programmers.

Bjarne Stroustrup, The C++ Programming Language, 3rd Edition, page 371:

->''"Throwing an exception requires an object to throw. A C++ implementation is required to have enough spare memory to be able to throw bad_alloc in case of memory exhaustion. However, it is possible that throwing some other exception will cause memory exhaustion."''

Therefore, the language itself does not guarantee that an attempt to throw an exception is guaranteed to throw an object of the specified type; propagating a std::bad_alloc seems to be a possibility even outside of the scope of Boost Exception.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-48</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string> mod="m":)()) (the return value is expected to be of type std::string.)
#Unqualified call to s << x.(:link </string>
- <variant>1</variant>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-48</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
+ <size>7</size>
 <variant>2</variant>
- <string> mod="m":)(), where s is a std::ostringstream.

The first successfully bound function is used at the time (:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

E must be boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) is called; if both overload resolutions are unsuccessful, the system is unable to convert the (:link </string>
+ <string>:), or a type that derives (indirectly) from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) object to string, and ''an unspecified stub string value is used without issuing a compile error.''

The (:link </string>
+ <string>:).

!!!!Postcondition:

A copy of v is stored into x. If x already contains data of type (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) overload of (:link </string>
- <variant>1</variant>
+ <string>:)<Tag,T>, that data is overwritten. Basic exception safety guarantee.

!!!!Returns:

x.

(:include throws:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-20</id>
 </shared_ptr>
 </weak_ptr>
+ <size>7</size>
 <variant>2</variant>
- <string>:) is equivalent to:

[@if( p )
 try
 {
 (:link </string>
+ <string>(:auto !!!:)

(:include decl:)

!!!!Effects:

* Default constructor: initializes an empty boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-45</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(p);
 }
 catch(...)
 {
 return (:link </string>
+ <string>:) object.
* Copy constructor: initializes a boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-35</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(verbose);
 }
else return <unspecified-string-value>;@]

(:include </string>
+ <string>:) object which shares ownership with x of all data added through (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-60</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
</string>
+ <string> mod="/":), including data that is added at a future time.

!!!!Throws:

Nothing.
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-24</id>
+ <id>-21</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
+ <size>77</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard (:link </string>
+ <string>!!Synopsis

List of documented definitions, declarations and includes by header file:

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
@@ -7714,432 +7668,423 @@
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) instance for transporting (in exceptions deriving from boost::(:link </string>
+ <string>:)>

[@(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-50</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)) an </string>
+ <string> synopsis:)@]

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> to an exception nested into another exception.
</string>
- </pair>
- <pair>
+ <string>:)>

[@(:include </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-18</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string> synopsis:)@]

`#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
 <id>-25</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
+ <string>:)>

[@(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-26</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard (:link </string>
+ <string> synopsis:)@]

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-37</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) instance for transporting a relevant FILE pointer managed by a boost::shared_ptr<FILE> in exceptions deriving from boost::(:link </string>
+ <string>:)>

[@(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-37</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).

!!!Example:

(:include </string>
+ <string> synopsis:)@]

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-13</id>
+ <id>-78</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
</string>
- </pair>
- <pair>
+ <string>:)>

[@(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-78</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

This macro takes an exception object, records the current function name, __FILE__ and __LINE__ in it, and forwards it to (:link </string>
+ <string> synopsis:)@]

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-64</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:). To recover this information at the catch site, use (:link </string>
+ <string>:)>

[@(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-64</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:); the information is also included in the message returned by (:link </string>
+ <string> synopsis:)@]

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-42</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).
</string>
- </pair>
- <pair>
+ <string>:)>

[@(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-28</id>
+ <id>-42</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include decl:)

!!!!Effects:



Frees all resources associated with a boost::(:link </string>
+ <string> synopsis:)@]

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) object.

!!!!Throws:



Nothing.
</string>
- </pair>
- <pair>
+ <string>:)>

[@(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-29</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

(:pagelist tags="hpp" except_tags="noindex":)
</string>
- </pair>
- <pair>
+ <string> synopsis:)@]

`#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-30</id>
+ <id>-36</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
+ <string>:)>

[@(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-36</id>
 </shared_ptr>
 </weak_ptr>
- <size>15</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Effects:

* If BOOST_NO_EXCEPTIONS is not defined, boost::(:link </string>
+ <string> synopsis:)@]

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-39</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(e) throws an exception of unspecified type that derives publicly from E and from boost::</string>
+ <string>:)>

[@(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-39</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>.
* If BOOST_NO_EXCEPTIONS is defined, the function is left undefined, and the user is expected to supply an appropriate definition. Callers of (:link </string>
+ <string> synopsis:)@]

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-59</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) are allowed to assume that the function never returns; therefore, if the user-defined (:link </string>
+ <string>:)>

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-59</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) returns, the behavior is undefined.

!!!!Requirements:

E must derive publicly from std::exception. E may or may not derive from boost::</string>
+ <string> synopsis:)

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-15</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>.

!!!!Notes:

* The emitted exception can be intercepted as E &, std::exception &, or boost::exception &.
* The emitted exception supports boost::</string>
+ <string>:)>

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-15</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>.
* If BOOST_EXCEPTION_DISABLE is defined and BOOST_NO_EXCEPTIONS is not defined, boost::</string>
+ <string> synopsis:)

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-40</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>(e) equivalent to throw e.
</string>
- </pair>
- <pair>
+ <string>:)>

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-40</id>
 </shared_ptr>
 </weak_ptr>
- <size>13</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

* ErrorInfo must be an instance of the (:link </string>
+ <string> synopsis:)

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-7</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) template.
* E must be polymorphic.

!!!!Returns:

* If dynamic_cast<boost::(:link </string>
+ <string>:)>

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-7</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) const *>(&x) is 0, or if x does not store an object of type ErrorInfo, the returned value is null.
* Otherwise, the returned pointer points to the stored value (use (:link </string>
+ <string> synopsis:)

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-66</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="/":) to store values in exception objects.) When x is destroyed, any pointers returned by (:link </string>
+ <string>:)>

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-66</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) become invalid.

!!!!Throws:

Nothing.

!!!!Note:

The interface of (:link </string>
+ <string> synopsis:)

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-76</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) may be affected by the build (:link </string>
+ <string>:)>

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-44</id>
+ <id>-76</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).
</string>
- </pair>
- <pair>
+ <string> synopsis:)

`#include <</string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-56</id>
 </shared_ptr>
 </weak_ptr>
- <size>23</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

The (:link </string>
+ <string>>

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-56</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) type can be used to refer to a copy of an exception object. It is Default Constructible, Copy Constructible, Assignable and Equality Comparable; (:link </string>
+ <string> synopsis:)

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-44</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)'s operations do not throw.

The referenced object remains valid at least as long as there is an (:link </string>
+ <string>:)>

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-44</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) object that refers to it.

Two instances of (:link </string>
+ <string> synopsis:)

`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-11</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) are equivalent and compare equal if and only if they refer to the same exception.

The default constructor of (:link </string>
+ <string>:)>

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-11</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) produces the null value of the type. The null value is equivalent only to itself.

!!!!Thread safety:

The </string>
- <variant>1</variant>
+ <string> synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-22</id>
 </shared_ptr>
 </weak_ptr>
+ <size>21</size>
 <variant>2</variant>
- <string> type is "as thread-safe as built-in types":

* An </string>
+ <string>(:auto !!:)

Boost Exception responds to the following configuration macros:

'''BOOST_NO_RTTI'''\\
'''BOOST_NO_TYPEID'''

The first macro prevents Boost Exception from using dynamic_cast and dynamic typeid. If the second macro is also defined, Boost Exception does not use static typeid either. There are no observable degrading effects on the library functionality, except for the following:

->By default, the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> instance can be "read" simultaneously by multiple threads
* Different </string>
+ <string>:) function template can be called with any exception type. If BOOST_NO_RTTI is defined, (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> instances can be "written to" simultaneously by multiple threads, even when these instances refer to the same exception object

All other simultaneous accesses result in undefined behavior.

!!!!Nesting of exceptions:

An (:link </string>
+ <string>:) can be used only with objects of type boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) can be added as (:link </string>
+ <string>:).

!!!!Note:

The library needs RTTI functionality. Disabling the language RTTI support enables an internal RTTI system, which may have more or less overhead depending on the platform.

'''BOOST_EXCEPTION_DISABLE'''

By default, (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) to any boost::(:link </string>
+ <string>:) and (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-63</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:). This is a convenient way to nest exceptions. There is no limit on the depth of the nesting, however cyclic references result in undefined behavior.
</string>
- </pair>
- <pair>
+ <string>:) are integrated directly in the (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-34</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard (:link </string>
+ <string>:) function. Defining BOOST_EXCEPTION_DISABLE disables this integration.

Note that on some non-conformant compilers, for example MSVC 7.0 and older, as well as BCC, BOOST_EXCEPTION_DISABLE is implicitly defined in (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-39</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) instance for transporting the string passed as a second argument to fopen in exceptions indicating fopen failures and deriving from boost::(:link </string>
+ <string>:).

'''BOOST_NO_EXCEPTIONS'''

This macro disables exception handling in Boost, forwarding all exceptions to a user-defined non-template version of boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).

!!!Example:

(:include </string>
+ <string>:). However, unless BOOST_EXCEPTION_DISABLE is also defined, users can still examine the exception object for any data added at the point of the throw, or use boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
@@ -8148,1864 +8093,1924 @@
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
</string>
- </pair>
- <pair>
+ <string>:) (of course under BOOST_NO_EXCEPTIONS, the user-defined boost::throw_exception is not allowed to return to the caller.)

'''BOOST_THROW_EXCEPTION_CURRENT_FUNCTION'''

The </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-35</id>
+ <id>-33</id>
 </shared_ptr>
 </weak_ptr>
- <size>9</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

This function must not be called outside of a catch block.

!!!!Returns:

If the current exception object can be converted to boost::(:link </string>
- <variant>1</variant>
+ <string> macro uses BOOST_THROW_EXCEPTION_CURRENT_FUNCTION to record the name of the current function in the exception object. Unless overridden by the user, BOOST_THROW_EXCEPTION_CURRENT_FUNCTION expands to BOOST_CURRENT_FUNCTION.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-23</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:) or std::exception, this function returns the same string value returned by (:link </string>
- <variant>1</variant>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Precondition:

ep shall not be null.

!!!!Throws:



The exception to which ep refers.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-24</id>
 </shared_ptr>
 </weak_ptr>
+ <size>5</size>
 <variant>2</variant>
- <string>:) for the current exception object. Otherwise, an unspecified non-empty string is returned.

Typical use is to call </string>
+ <string>(:auto !!!:)

Exception types should use virtual inheritance when deriving from other exception types. This insight is due to Andrew Koenig. Using virtual inheritance prevents ambiguity problems in the exception handler:

[@#include <iostream>
struct my_exc1 : std::exception { char const* what() const throw(); };
struct my_exc2 : std::exception { char const* what() const throw(); };
struct your_exc3 : my_exc1, my_exc2 {};

int
main()
 {
 try { throw your_exc3(); }
 catch(std::exception const& e) {}
 catch(...) { std::cout << "whoops!" << std::endl; }
 }@]

The program above outputs "whoops!" because the conversion to std::exception is ambiguous.

The overhead introduced by virtual inheritance is always negligible in the context of exception handling. Note that virtual bases are initialized directly by the constructor of the most-derived-type (the type passe
d to the throw statement, in case of exceptions.) However, typically this detail is of no concern when boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-35</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> from a top-level function to output diagnostic information about unhandled exceptions:

[@int
main()
 {
 try
 {
 run_program();
 }
 catch(
 error & e )
 {
 //handle error
 }
 catch(
 ...)
 {
 std::cerr << "Unhandled exception!" << std::endl <<
 boost::</string>
+ <string>:) is used, because it enables exception types to be trivial structs with no members (there's nothing to initialize.) See (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-35</id>
+ <id>-45</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>();
 }
 }@]
</string>
+ <string> mod="w":).
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-36</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
+ <size>1</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard (:link </string>
- <variant>1</variant>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-26</id>
 </shared_ptr>
 </weak_ptr>
+ <size>19</size>
 <variant>2</variant>
- <string>:) instance for transporting a relevant file name in exceptions deriving from boost::(:link </string>
+ <string>(:auto !!:)

Boost Exception provides a namespace-scope function (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).

!!!Example:

(:include </string>
+ <string>:) which takes a boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-13</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
</string>
- </pair>
- <pair>
+ <string>:). The returned string contains:

*the string representation of all data objects added to the boost::(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-37</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
- <size>11</size>
 <variant>2</variant>
- <string>(:auto !!:)

All exception types that derive from boost::(:link </string>
+ <string>:) through (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) can be used as type-safe containers of arbitrary data objects, while complying with the no-throw requirements (15.5.1) of the ANSI C++ standard for exception types.

When exceptions derive from boost::(:link </string>
+ <string> mod="/":);
*the output from std::exception::what;
*additional platform-specific diagnostic information.

The returned string is not presentable as a friendly user message, but because it is generated automatically, it is useful for debugging or logging purposes. Here is an example:

[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-11</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:), arbitrary data can be added to exception objects:

*At the point of the throw;
*At a later time as exceptions bubble up the call stack.

(:include </string>
+ <string>:)>
#include <iostream>

void f(); //throws unknown types that derive from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-63</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
(:include </string>
+ <string>:).

void
g()
 {
 try
 {
 f();
 }
 catch(
 boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-47</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
(:include </string>
+ <string>:) & e )
 {
 std::cerr << (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-19</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
</string>
- </pair>
- <pair>
+ <string>:)(e);
 }
 }@]

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-72</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ <string>:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-39</id>
+ <id>-27</id>
 </shared_ptr>
 </weak_ptr>
 <size>5</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Definition:

The expression </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

E must be boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string><Tag,T>::(:link </string>
+ <string>:), or a type that derives (indirectly) from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-39</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="m":) evaluates to T.</string>
+ <string>:).

!!!!Effects:

Equivalent to x << v.(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html#accessing_elements|get:)<0>() << ... << v.(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html#accessing_elements|get:)<N>().

!!!!Returns:

x.

(:include throws:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-40</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
 <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

(:pagelist fmt="index" tags="function":)
</string>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-41</id>
+ <id>-29</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
+ <size>9</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
+ <string>(:auto !!!:)

(:include synopsis:)

This </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-42</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Effects:

As if

[@try
 {
 throw </string>
+ <string> typedef is used by </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>(e);
 }
catch(...)
 {
 return (:link </string>
+ <string> if it defaults to returning an </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)();
 }@]
</string>
+ <string> that refers to an object of type </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-77</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string>, to record in it the std::type_info of the original exception object.</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-43</id>
+ <id>-30</id>
 </shared_ptr>
 </weak_ptr>
- <size>77</size>
+ <size>11</size>
 <variant>2</variant>
- <string>!!Synopsis

List of documented definitions, declarations and includes by header file:

`#include <(:link </string>
+ <string>(:auto !!:)

Boost Exception supports transporting of exception objects between threads through cloning. This system is similar to (:link http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2179.html|N2179:), but because Boost Exception can not rely on language support, the use of (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@(:include </string>
+ <string>:) at the time of the throw is required in order to use cloning.

!!!!Note:

All exceptions emitted by the familiar function boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)@]

`#include <(:link </string>
+ <string>:) are guaranteed to derive from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@(:include </string>
+ <string>:) and to support cloning.

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-65</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)@]

`#include <(:link </string>
+ <string>:)
(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-31</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@(:include </string>
- <variant>1</variant>
+ <string>:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-31</id>
 </shared_ptr>
 </weak_ptr>
+ <size>37</size>
 <variant>2</variant>
- <string> synopsis:)@]

`#include <(:link </string>
+ <string>(:auto !!!:)

When you catch an exception, you can call (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-5</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@(:include </string>
+ <string>:) to get an (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-5</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)@]

`#include <(:link </string>
+ <string>:) object:

[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-66</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@(:include </string>
+ <string>:)>
#include <boost/thread.hpp>
#include <boost/bind.hpp>

void do_work(); //throws cloning-enabled boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-66</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)@]

`#include <(:link </string>
+ <string>:)s

void
worker_thread( boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-72</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@(:include </string>
+ <string>:) & error )
 {
 try
 {
 do_work();
 error = boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-72</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)@]

`#include <(:link </string>
+ <string>:)();
 }
 catch(
 ... )
 {
 error = boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-9</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@(:include </string>
+ <string>:)();
 }
 }@]

In the above example, note that (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-9</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)@]

`#include <(:link </string>
+ <string>:) captures the original type of the exception object. The exception can be thrown again using the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-76</id>
+ <id>-23</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@(:include </string>
+ <string>:) function:

[@// ...continued

void
work()
 {
 boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-76</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)@]

`#include <(:link </string>
+ <string>:) error;
 boost::(:link http://www.boost.org/doc/html/boost/thread.html|thread:) t( boost::(:link http://www.boost.org/libs/bind/bind.html|bind:)(worker_thread,boost::(:link http://www.boost.org/doc/html/ref.html|ref:)(error)) );
 t.(:link http://www.boost.org/doc/html/boost/thread.html|join:)();
 if( error )
 boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-30</id>
+ <id>-23</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@(:include </string>
+ <string>:)(error);
 }@]

Note that (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-30</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)@]

`#include <(:link </string>
+ <string>:) could fail to copy the original exception object in the following cases:

* if there is not enough memory, in which case the returned (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-17</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@(:include </string>
+ <string>:) points to an instance of std::bad_alloc, or
* if (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-17</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)@]

`#include <(:link </string>
+ <string>:) was not used in the throw-expression passed to the original throw statement and the current implementation does not have the necessary compiler-specific support to copy the exception automatically, in which case the returned (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-67</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

(:include </string>
+ <string>:) points to an instance of (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-67</id>
+ <id>-77</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)

`#include <(:link </string>
+ <string>:).

Regardless, the use of (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-25</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

(:include </string>
+ <string>:) and (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-25</id>
+ <id>-23</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)

`#include <(:link </string>
- <variant>1</variant>
+ <string>:) in the above examples is well-formed.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-18</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
+ <size>21</size>
 <variant>2</variant>
- <string>:)>

(:include </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

* T must be a class with an accessible no-throw copy constructor.
* If T has any virtual base types, those types must have an accessible default constructor.

!!!!Returns:

An object of ''unspecified'' type which derives publicly from T. That is, the returned object can be intercepted by a catch(T &).

!!!!Description:



This function is designed to be used directly in a throw-expression to enable the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-18</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)

`#include <(:link </string>
+ <string>:) support in Boost Exception. For example:

[@class
my_exception:
 public std::exception
 {
 };

....
throw boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-14</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

(:include </string>
+ <string>:)(my_exception());@]

Unless (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-14</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)

`#include <(:link </string>
+ <string>:) is called at the time an exception object is used in a throw-expression, an attempt to copy it using (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-74</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

(:include </string>
+ <string>:) may return an (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-74</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)

`#include <(:link </string>
+ <string>:) which refers to an instance of (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-64</id>
+ <id>-77</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

(:include </string>
+ <string>:). See (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-64</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)

`#include <</string>
+ <string>:) for details.

!!!!Note:

Instead of using the throw keyword directly, it is preferable to call boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-52</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>>

(:include </string>
+ <string>:). This is guaranteed to throw an exception that derives from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-52</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)

`#include <(:link </string>
+ <string>:) and supports the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-20</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

(:include </string>
- <variant>1</variant>
+ <string>:) functionality.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-20</id>
+ <id>-33</id>
 </shared_ptr>
 </weak_ptr>
+ <size>7</size>
 <variant>2</variant>
- <string> synopsis:)

`#include <(:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

This macro takes an exception object, records the current function name, __FILE__ and __LINE__ in it, and forwards it to (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-41</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

(:include </string>
+ <string>:). To recover this information at the catch site, use (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-41</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)
</string>
- </pair>
- <pair>
+ <string>:); the information is also included in the message returned by (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-44</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
- <size>21</size>
 <variant>2</variant>
- <string>(:auto !!:)

Boost Exception responds to the following configuration macros:

'''BOOST_NO_RTTI'''\\
'''BOOST_NO_TYPEID'''

The first macro prevents Boost Exception from using dynamic_cast and dynamic typeid. If the second macro is also defined, Boost Exception does not use static typeid either. There are no observable degrading effects on the library functionality, except for the following:

->By default, the (:link </string>
- <variant>1</variant>
+ <string>:).
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-34</id>
 </shared_ptr>
 </weak_ptr>
+ <size>3</size>
 <variant>2</variant>
- <string>:) function template can be called with any exception type. If BOOST_NO_RTTI is defined, (:link </string>
+ <string>(:auto !!!:)

(:include decl:)

!!!!Effects:



Frees all resources associated with a boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) can be used only with objects of type boost::(:link </string>
- <variant>1</variant>
+ <string>:) object.

!!!!Throws:



Nothing.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-35</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:).

!!!!Note:

The library needs RTTI functionality. Disabling the language RTTI support enables an internal RTTI system, which may have more or less overhead depending on the platform.

'''BOOST_EXCEPTION_DISABLE'''

By default, (:link </string>
- <variant>1</variant>
+ <string>(:auto !!:)

(:pagelist tags="hpp" except_tags="noindex":)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-36</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:) and (:link </string>
- <variant>1</variant>
+ <string>(:auto !!!:)

!!!Synopsis

(:include synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-71</id>
+ <id>-37</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:) are integrated directly in the (:link </string>
- <variant>1</variant>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-38</id>
 </shared_ptr>
 </weak_ptr>
+ <size>7</size>
 <variant>2</variant>
- <string>:) function. Defining BOOST_EXCEPTION_DISABLE disables this integration.

Note that on some non-conformant compilers, for example MSVC 7.0 and older, as well as BCC, BOOST_EXCEPTION_DISABLE is implicitly defined in (:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

The (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-17</id>
+ <id>-38</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).

'''BOOST_NO_EXCEPTIONS'''

This macro disables exception handling in Boost, forwarding all exceptions to a user-defined non-template version of boost::(:link </string>
+ <string>:) function is intended to be called from a user-defined std::exception::what() override. This allows diagnostic information to be returned as the what() string.

!!!!Returns:

A pointer to a zero-terminated buffer that contains a string similar to the std::string returned by the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:). However, unless BOOST_EXCEPTION_DISABLE is also defined, users can still examine the exception object for any data added at the point of the throw, or use boost::(:link </string>
+ <string>:) function, or null to indicate a failure.

!!!!Throws:

Nothing.

!!!!Note:

The returned pointer becomes invalid if any (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) (of course under BOOST_NO_EXCEPTIONS, the user-defined boost::throw_exception is not allowed to return to the caller.)

'''BOOST_THROW_EXCEPTION_CURRENT_FUNCTION'''

The </string>
- <variant>1</variant>
+ <string>:) is modified or added to the exception object, or if another diagnostic information function is called.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-39</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string> macro uses BOOST_THROW_EXCEPTION_CURRENT_FUNCTION to record the name of the current function in the exception object. Unless overridden by the user, BOOST_THROW_EXCEPTION_CURRENT_FUNCTION expands to BOOST_CURRENT_FUNCTION.
</string>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-45</id>
+ <id>-40</id>
 </shared_ptr>
 </weak_ptr>
 <size>1</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Precondition:

ep shall not be null.

!!!!Throws:



The exception to which ep refers.
</string>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-46</id>
+ <id>-41</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
+ <size>7</size>
 <variant>2</variant>
- <string>(:auto !!!:)

Exception types should use virtual inheritance when deriving from other exception types. This insight is due to Andrew Koenig. Using virtual inheritance prevents ambiguity problems in the exception handler:

[@#include <iostream>
struct my_exc1 : std::exception { char const* what() const throw(); };
struct my_exc2 : std::exception { char const* what() const throw(); };
struct your_exc3 : my_exc1, my_exc2 {};

int
main()
 {
 try { throw your_exc3(); }
 catch(std::exception const& e) {}
 catch(...) { std::cout << "whoops!" << std::endl; }
 }@]

The program above outputs "whoops!" because the conversion to std::exception is ambiguous.

The overhead introduced by virtual inheritance is always negligible in the context of exception handling. Note that virtual bases are initialized directly by the constructor of the most-derived-type (the type passe
d to the throw statement, in case of exceptions.) However, typically this detail is of no concern when boost::(:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) is used, because it enables exception types to be trivial structs with no members (there's nothing to initialize.) See (:link </string>
+ <string>:) instance for transporting a relevant errno value in exceptions deriving from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-12</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="w":).
</string>
- </pair>
- <pair>
+ <string>:).

!!!Example:

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-47</id>
+ <id>-46</id>
 </shared_ptr>
 </weak_ptr>
- <size>19</size>
 <variant>2</variant>
- <string>(:auto !!!:)

Sometimes the throw site does not have all the information that is needed at the catch site to make sense of what went wrong. Let's say we have an exception type file_read_error, which takes a file name in its constructor. Consider the following function:

[@void
file_read( FILE * f, void * buffer, size_t size )
 {
 if( size!=fread(buffer,1,size,f) )
 throw file_read_error(????);
 }@]

How can the file_read function pass a file name to the exception type constructor? All it has is a FILE handle.

Using boost::(:link </string>
- <variant>1</variant>
+ <string>:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-42</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:) allows us to free the file_read function from the burden of storing the file name in exceptions it throws:

[@`#include <(:link </string>
- <variant>1</variant>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-41</id>
+ <id>-43</id>
 </shared_ptr>
 </weak_ptr>
+ <size>19</size>
 <variant>2</variant>
- <string>:)>
#include <boost/shared_ptr.hpp>
#include <stdio.h>
#include <errno.h>

struct file_read_error: virtual boost::(:link </string>
+ <string>(:auto !!!:)

The code snippet below demonstrates how boost::(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html|tuple:) can be used to bundle the name of the function that failed, together with the reported errno so that they can be added to exception objects more conveniently together:

[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-37</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) { };

void
file_read( FILE * f, void * buffer, size_t size )
 {
 if( size!=fread(buffer,1,size,f) )
 throw file_read_error() << boost::(:link </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-8</id>
+ <id>-66</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(errno);
 }@]

If file_read detects a failure, it throws an exception which contains the information that is available at the time, namely the errno. Other relevant information, such as the file name, can be added in a context higher up the call stack, where it is known naturally:

[@#include <(:link </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-41</id>
+ <id>-59</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <boost/shared_ptr.hpp>
#include <stdio.h>
#include <string>

boost::shared_ptr<FILE> file_open( char const * file_name, char const * mode );
void file_read( FILE * f, void * buffer, size_t size );

void
parse_file( char const * file_name )
 {
 boost::shared_ptr<FILE> f = file_open(file_name,"rb");
 assert(f);
 try
 {
 char buf[1024];
 file_read( f.get(), buf, sizeof(buf) );
 }
 catch(
 boost::(:link </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-40</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) & e )
 {
 e << boost::(:link </string>
+ <string>:)>
#include <boost/shared_ptr.hpp>
#include <stdio.h>
#include <string>
#include <errno.h>

typedef boost::(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html|tuple:)<boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-36</id>
+ <id>-5</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(file_name);
 throw;
 }
 }@]

The above function is (almost) exception-neutral -- if an exception is emitted by any function call within the try block, parse_file does not need to do any real work, but it intercepts any boost::(:link </string>
+ <string>:),boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-41</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) object, stores the file name, and re-throws using a throw-expression with no operand (15.1.6). The rationale for catching any boost::(:link </string>
+ <string>:)> clib_failure;

struct file_open_error: virtual boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) object is that the file name is relevant to any failure that occurs in parse_file, ''even if the failure is unrelated to file I/O''.
</string>
- </pair>
- <pair>
+ <string>:) { };

boost::shared_ptr<FILE>
file_open( char const * name, char const * mode )
 {
 if( FILE * f=fopen(name,mode) )
 return boost::shared_ptr<FILE>(f,fclose);
 else
 throw file_open_error() <<
 boost::(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
 <id>-48</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Description:

Returns a (const) reference to the copy of the value passed to (:link </string>
+ <string>:)(name) <<
 clib_failure("fopen",errno);
 }@]

Note that the members of a boost::(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html|tuple:) are stored separately in exception objects; they can only be retrieved individually, using (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)'s constructor stored in the (:link </string>
- <variant>1</variant>
+ <string>:).
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-44</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:) object.

!!!!Throws:

Nothing.
</string>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-45</id>
 </shared_ptr>
 </weak_ptr>
- <size>13</size>
+ <size>7</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

Class boost::(:link </string>
+ <string>(:auto !!!:)

Deriving from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) is designed to be used as a universal base for user-defined exception types.

An object of any type deriving from boost::(:link </string>
+ <string>:) effectively decouples the semantics of a failure from the information that is relevant to each individual instance of reporting a failure with a given semantic.

In other words: with boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) can store data of arbitrary types, using the (:link </string>
+ <string>:), what data a given exception object transports depends primarily on the context in which failures are reported (not on its type.) Since exception types need no members, it becomes very natural to throw exceptions that derive from more than one type to indicate multiple appropriate semantics:

[@struct exception_base: virtual std::exception, virtual boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) wrapper and (:link </string>
- <variant>1</variant>
+ <string>:) { };
struct io_error: virtual exception_base { };
struct file_error: virtual io_error { };
struct read_error: virtual io_error { };
struct file_read_error: virtual file_error, virtual read_error { };@]

Using this approach, exception types become a simple tagging system for categorizing errors and selecting failures in exception handlers.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-46</id>
 </shared_ptr>
 </weak_ptr>
+ <size>37</size>
 <variant>2</variant>
- <string> mod="/":).

To retrieve data from a boost::(:link </string>
+ <string>[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-59</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) object, use the (:link </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-15</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) function template.
</string>
- </pair>
- <pair>
+ <string>:)>
#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-40</id>
 </shared_ptr>
 </weak_ptr>
- <size>41</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

T must have accessible copy constructor and must not be a reference (there is no requirement that T's copy constructor does not throw.)

!!!!Description:

This class template is used to associate a Tag type with a value type T. Objects of type (:link </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-7</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<Tag,T> can be passed to (:link </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-66</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="/":) to be stored in objects of type boost::(:link </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-76</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).

!!!!Usage:

The header <(:link </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)> provides a declaration of the (:link </string>
+ <string>:)>
#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-39</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) template, which is sufficient for the purpose of typedefing an instance for specific Tag and T, for example:

[@#include <(:link </string>
+ <string>:)>
#include <boost/shared_ptr.hpp>
#include <boost/weak_ptr.hpp>
#include <stdio.h>
#include <errno.h>
#include <exception>

struct error : virtual std::exception, virtual boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

struct tag_errno;
typedef boost::(:link </string>
+ <string>:) { };
struct file_error : virtual error { };
struct file_open_error: virtual file_error { };
struct file_read_error: virtual file_error { };

boost::shared_ptr<FILE>
open_file( char const * file, char const * mode )
 {
 if( FILE * f=fopen(file,mode) )
 return boost::shared_ptr<FILE>(f,fclose);
 else
 (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-33</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<tag_errno,int> errno_info;@]

Or, the shorter equivalent:

[@#include <(:link </string>
+ <string>:)(
 file_open_error() <<
 boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-5</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

typedef boost::(:link </string>
+ <string>:)("fopen") <<
 boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-41</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<struct tag_errno,int> errno_info;@]

This errno_info typedef can be passed to (:link </string>
+ <string>:)(errno) <<
 boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-48</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="/":) (#include <(:link </string>
+ <string>:)(file) <<
 boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-70</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)> first) to store an int named tag_errno in exceptions of types that derive from boost::(:link </string>
+ <string>:)(mode) );
 }

size_t
read_file( boost::shared_ptr<FILE> const & f, void * buf, size_t size )
 {
 size_t nr=fread(buf,1,size,f.get());
 if( ferror(f.get()) )
 (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-33</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:):

[@throw file_read_error() (:link </string>
+ <string>:)(
 file_read_error() <<
 boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-5</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|<<:) errno_info(errno);@]

It can also be passed to (:link </string>
+ <string>:)("fread") <<
 boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-41</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) (#include <(:link </string>
+ <string>:)(errno) <<
 boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-68</id>
+ <id>-16</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)> first) to retrieve the tag_errno int from a boost::(:link </string>
- <variant>1</variant>
+ <string>:)(f) );
 return nr;
 }@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-47</id>
 </shared_ptr>
 </weak_ptr>
+ <size>9</size>
 <variant>2</variant>
- <string>:):

[@catch( boost::(:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

This function must not be called outside of a catch block.

!!!!Returns:

If the current exception object can be converted to boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) & x )
 {
 if( int const * e=boost::(:link </string>
+ <string>:) or std::exception, this function returns the same string value returned by (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<errno_info>(x) )
 ....
 }@]

For convenience and uniformity, Boost Exception defines the following commonly used (:link </string>
+ <string>:) for the current exception object. Otherwise, an unspecified non-empty string is returned.

Typical use is to call </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-47</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) typedefs, ready for use with (:link </string>
+ <string> from a top-level function to output diagnostic information about unhandled exceptions:

[@int
main()
 {
 try
 {
 run_program();
 }
 catch(
 error & e )
 {
 //handle error
 }
 catch(
 ...)
 {
 std::cerr << "Unhandled exception!" << std::endl <<
 boost::</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-47</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="/":):

(:pagelist tags="error_info_instance":)
</string>
+ <string>();
 }
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-51</id>
+ <id>-48</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
+ <size>7</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Effects:

Stores a copy of v in the </string>
+ <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> object.

(:include throws:)
</string>
- </pair>
- <pair>
+ <string>:) instance for transporting a relevant file name in exceptions deriving from boost::(:link </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-53</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string>:).

!!!Example:

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-52</id>
+ <id>-46</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ <string>:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-53</id>
+ <id>-49</id>
 </shared_ptr>
 </weak_ptr>
- <size>33</size>
+ <size>11</size>
 <variant>2</variant>
- <string>(:auto !!!:)

Traditionally, when using exceptions to report failures, the throw site:

*creates an exception object of the appropriate type, and
*stuffs it with data relevant to the detected error.

A higher context in the program contains a catch statement which:

*selects failures based on exception types, and
*inspects exception objects for data required to deal with the problem.

The main issue with this "traditional" approach is that often, the data available at the point of the throw is insufficient for the catch site to handle the failure.

Here is an example of a catch statement:

[@catch( file_read_error & e )
 {
 std::cerr << e.file_name();
 }@]

And here is a possible matching throw:

[@void
read_file( FILE * f )
 {
 ....
 size_t nr=fread(buf,1,count,f);
 if( ferror(f) )
 throw file_read_error(???);
 ....&#1
0; }@]

Clearly, the problem is that the handler requires a file name but the read_file function does not have a file name to put in the exception object; all it has is a FILE pointer!

In an attempt to deal with this problem, we could modify read_file to accept a file name:

[@void
read_file( FILE * f, char const * name )
 {
 ....
 size_t nr=fread(buf,1,count,f);
 if( ferror(f) )
 throw file_read_error(name);
 ....
 }@]

This is not a real solution: it simply shifts the burden of supplying a file name to the immediate caller of the read_file function.

->''In general, the data required to handle a given library-emitted exception depends on the program that links to it. Many contexts between the throw and the catch may have relevant information which must be transported to the exception handler.''

!!!Exception wrapping

The idea of exception wrapping is to catch an excep
tion from a lower level function (such as the read_file function above), and throw a new exception object that contains the original exception (and also carries a file name.) This method seems to be particularly popular with C++ programmers with Java background.

Exception wrapping leads to the following problems:

*To wrap an exception object it must be copied, which may result in slicing.
*Wrapping is practically impossible to use in generic contexts.

The second point is actually special case of violating the exception neutrality principle. Most contexts in a program can not handle exceptions; such contexts should not interfere with the process of exception handling.

!!!The boost::exception solution

*Simply derive your exception types from boost::(:link </string>
+ <string>(:auto !!:)

All exception types that derive from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).
*Confidently limit the throw site to provide only data that is available naturally.
*Use exception-neutral contexts between the throw and the catch to augment exceptions with more relevant data as they bubble up.

For example, in the throw statement below we only add the errno code, since this is the only failure-relevant information available in this context:

[@struct exception_base: virtual std::exception, virtual boost::(:link </string>
+ <string>:) can be used as type-safe containers of arbitrary data objects, while complying with the no-throw requirements (15.5.1) of the ANSI C++ standard for exception types.

When exceptions derive from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) { };
struct io_error: virtual exception_base { };
struct file_read_error: virtual io_error { };

typedef boost::(:link </string>
+ <string>:), arbitrary data can be added to exception objects:

*At the point of the throw;
*At a later time as exceptions bubble up the call stack.

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-75</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<struct tag_errno_code,int> errno_code;

void
read_file( FILE * f )
 {
 ....
 size_t nr=fread(buf,1,count,f);
 if( ferror(f) )
 throw file_read_error() (:link </string>
+ <string>:)
(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-51</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|<<:) errno_code(errno);
 ....
 }@]

In a higher exception-neutral context, we add the file name to ''any'' exception that derives from boost::(:link </string>
+ <string>:)
(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-43</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:):

[@typedef boost::(:link </string>
- <variant>1</variant>
+ <string>:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
 <id>-50</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:)<struct tag_file_name,std::string> file_name;

....
try
 {
 if( FILE * fp=fopen("foo.txt","rt") )
 {
 shared_ptr<FILE> f(fp,fclose);
 ....
 read_file(fp); //throws types deriving from boost::(:link </string>
- <variant>1</variant>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-51</id>
 </shared_ptr>
 </weak_ptr>
+ <size>19</size>
 <variant>2</variant>
- <string>:)
 do_something();
 ....
 }
 else
 throw file_open_error() (:link </string>
+ <string>(:auto !!!:)

Sometimes the throw site does not have all the information that is needed at the catch site to make sense of what went wrong. Let's say we have an exception type file_read_error, which takes a file name in its constructor. Consider the following function:

[@void
file_read( FILE * f, void * buffer, size_t size )
 {
 if( size!=fread(buffer,1,size,f) )
 throw file_read_error(????);
 }@]

How can the file_read function pass a file name to the exception type constructor? All it has is a FILE handle.

Using boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|<<:) errno_code(errno);
 }
catch( boost::(:link </string>
+ <string>:) allows us to free the file_read function from the burden of storing the file name in exceptions it throws:

[@`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-11</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) & e )
 {
 e (:link </string>
+ <string>:)>
#include <boost/shared_ptr.hpp>
#include <stdio.h>
#include <errno.h>

struct file_read_error: virtual boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|<<:) file_name("foo.txt");
 throw;
 }@]

Finally here is how the handler retrieves data from exceptions that derive from boost::(:link </string>
+ <string>:) { };

void
file_read( FILE * f, void * buffer, size_t size )
 {
 if( size!=fread(buffer,1,size,f) )
 throw file_read_error() << boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-41</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:):

[@catch( io_error & e )
 {
 std::cerr << "I/O Error!\n";

 if( std::string const * fn=(:link </string>
+ <string>:)(errno);
 }@]

If file_read detects a failure, it throws an exception which contains the information that is available at the time, namely the errno. Other relevant information, such as the file name, can be added in a context higher up the call stack, where it is known naturally:

[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-11</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<file_name>(e) )
 std::cerr << "File name: " << *fn << "\n";

 if( int const * c=(:link </string>
+ <string>:)>
#include <boost/shared_ptr.hpp>
#include <stdio.h>
#include <string>

boost::shared_ptr<FILE> file_open( char const * file_name, char const * mode );
void file_read( FILE * f, void * buffer, size_t size );

void
parse_file( char const * file_name )
 {
 boost::shared_ptr<FILE> f = file_open(file_name,"rb");
 assert(f);
 try
 {
 char buf[1024];
 file_read( f.get(), buf, sizeof(buf) );
 }
 catch(
 boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<errno_code>(e) )
 std::cerr << "OS says: " << strerror(*c) << "\n";
 }@]

In addition, boost::(:link </string>
+ <string>:) & e )
 {
 e << boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-48</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) can be used to compose an automatic (if not user-friendly) message that contains all of the (:link </string>
+ <string>:)(file_name);
 throw;
 }
 }@]

The above function is (almost) exception-neutral -- if an exception is emitted by any function call within the try block, parse_file does not need to do any real work, but it intercepts any boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) objects added to a boost::(:link </string>
+ <string>:) object, stores the file name, and re-throws using a throw-expression with no operand (15.1.6). The rationale for catching any boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:). This is useful for inclusion in logs and other diagnostic objects.
</string>
+ <string>:) object is that the file name is relevant to any failure that occurs in parse_file, ''even if the failure is unrelated to file I/O''.
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-54</id>
+ <id>-52</id>
 </shared_ptr>
 </weak_ptr>
- <size>27</size>
+ <size>5</size>
 <variant>2</variant>
- <string>(:auto !!:)

Some exception hierarchies can not be modified to make boost::(:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Description:

Returns a (const) reference to the copy of the value passed to (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) a base type. In this case, the (:link </string>
+ <string>:)'s constructor stored in the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-71</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) function template can be used to make exception objects derive from boost::(:link </string>
- <variant>1</variant>
+ <string>:) object.

!!!!Throws:

Nothing.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
+ <size>13</size>
 <variant>2</variant>
- <string>:) anyway. Here is an example:

[@#include <(:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

Class boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-41</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <stdexcept>

typedef boost::(:link </string>
+ <string>:) is designed to be used as a universal base for user-defined exception types.

An object of any type deriving from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<struct tag_std_range_min,size_t> std_range_min;
typedef boost::(:link </string>
+ <string>:) can store data of arbitrary types, using the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<struct tag_std_range_max,size_t> std_range_max;
typedef boost::(:link </string>
+ <string>:) wrapper and (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<struct tag_std_range_index,size_t> std_range_index;

template <class T>
class
my_container
 {
 public:

 size_t size() const;

 T const &
 operator[]( size_t i ) const
 {
 if( i > size() )
 throw boost::(:link </string>
+ <string> mod="/":).

To retrieve data from a boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-71</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(std::range_error("Index out of range")) <<
 std_range_min(0) <<
 std_range_max(size()) <<
 std_range_index(i);
 //....
 }
 };
@]

The call to (:link </string>
+ <string>:) object, use the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-71</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<T> gets us an object of ''unspecified type'' which is guaranteed to derive from both boost::(:link </string>
- <variant>1</variant>
+ <string>:) function template.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
+ <size>41</size>
 <variant>2</variant>
- <string>:) and T. This makes it possible to use (:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

T must have accessible copy constructor and must not be a reference (there is no requirement that T's copy constructor does not throw.)

!!!!Description:

This class template is used to associate a Tag type with a value type T. Objects of type (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="/":) to store additional information in the exception object. The exception can be intercepted as T &, so existing exception handling will not break. It can also be intercepted as boost::(:link </string>
+ <string>:)<Tag,T> can be passed to (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) &, so that (:link </string>
+ <string> mod="/":) to be stored in objects of type boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-37</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|more information can be added to the exception at a later time:).
</string>
- </pair>
- <pair>
+ <string>:).

!!!!Usage:

The header <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-55</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
- <size>81</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!What is the cost of calling boost::throw_exception?

The cost is that boost::(:link </string>
+ <string>:)> provides a declaration of the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) is added as a base of the exception emitted by boost::(:link </string>
+ <string>:) template, which is sufficient for the purpose of typedefing an instance for specific Tag and T, for example:

[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) (unless the passed type already derives from boost::(:link </string>
+ <string>:)>

struct tag_errno;
typedef boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).)

Calling boost::(:link </string>
+ <string>:)<tag_errno,int> errno_info;@]

Or, the shorter equivalent:

[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) does not cause dynamic memory allocations.

!!!What is the cost of BOOST_THROW_EXCEPTION?

In addition to calling boost::(:link </string>
+ <string>:)>

typedef boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:), </string>
+ <string>:)<struct tag_errno,int> errno_info;@]

This errno_info typedef can be passed to (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> invokes __FILE__, __LINE__ and the (:link </string>
+ <string> mod="/":) (#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-44</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|BOOST_THROW_EXCEPTION_CURRENT_FUNCTION:) macros. The space required to store the information is already included in sizeof(boost::(:link </string>
+ <string>:)> first) to store an int named tag_errno in exceptions of types that derive from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)).

Calling </string>
+ <string>:):

[@throw file_read_error() (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> does not cause dynamic memory allocations.

!!!Should I use boost::throw_exception or BOOST_THROW_EXCEPTION or just throw?

The benefit of calling boost::(:link </string>
+ <string>|<<:) errno_info(errno);@]

It can also be passed to (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) instead of using throw directly is that it ensures that the emitted exception derives from boost::(:link </string>
+ <string>:) (#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-60</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) and that it is compatible with boost::(:link </string>
+ <string>:)> first) to retrieve the tag_errno int from a boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).

The (:link </string>
+ <string>:):

[@catch( boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) macro also results in a call to boost::(:link </string>
+ <string>:) & x )
 {
 if( int const * e=boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:), but in addition it records in the exception object the __FILE__ and __LINE__ of the throw, as well as the pretty name of the function that throws. This enables boost::(:link </string>
+ <string>:)<errno_info>(x) )
 ....
 }@]

For convenience and uniformity, Boost Exception defines the following commonly used (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) to compose a more useful, if not user-friendly message.

Typical use of boost::(:link </string>
+ <string>:) typedefs, ready for use with (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) is:

[@catch(...)
 {
 std::cerr <<
 "Unexpected exception, diagnostic information follows:\n" <<
 </string>
- <variant>1</variant>
+ <string> mod="/":):

(:pagelist tags="error_info_instance":)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-35</id>
+ <id>-55</id>
 </shared_ptr>
 </weak_ptr>
+ <size>3</size>
 <variant>2</variant>
- <string>();
 }@]

This is a possible message it may display -- the information in the first line is only available if (:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Effects:

Stores a copy of v in the </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) was used to throw:

[@example_io.cpp(70): Throw in function class boost::shared_ptr<struct _iobuf> __cdecl my_fopen(const char *,const char *)
Dynamic exception type: class boost::exception_detail::clone_impl<class fopen_error>
std::exception::what: example_io error
[struct boost::(:link </string>
+ <string> object.

(:include throws:)
</string>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-56</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>1</size>
+ <variant>2</variant>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-57</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>33</size>
+ <variant>2</variant>
+ <string>(:auto !!!:)

Traditionally, when using exceptions to report failures, the throw site:

*creates an exception object of the appropriate type, and
*stuffs it with data relevant to the detected error.

A higher context in the program contains a catch statement which:

*selects failures based on exception types, and
*inspects exception objects for data required to deal with the problem.

The main issue with this "traditional" approach is that often, the data available at the point of the throw is insufficient for the catch site to handle the failure.

Here is an example of a catch statement:

[@catch( file_read_error & e )
 {
 std::cerr << e.file_name();
 }@]

And here is a possible matching throw:

[@void
read_file( FILE * f )
 {
 ....
 size_t nr=fread(buf,1,count,f);
 if( ferror(f) )
 throw file_read_error(???);
 ....&#1
0; }@]

Clearly, the problem is that the handler requires a file name but the read_file function does not have a file name to put in the exception object; all it has is a FILE pointer!

In an attempt to deal with this problem, we could modify read_file to accept a file name:

[@void
read_file( FILE * f, char const * name )
 {
 ....
 size_t nr=fread(buf,1,count,f);
 if( ferror(f) )
 throw file_read_error(name);
 ....
 }@]

This is not a real solution: it simply shifts the burden of supplying a file name to the immediate caller of the read_file function.

->''In general, the data required to handle a given library-emitted exception depends on the program that links to it. Many contexts between the throw and the catch may have relevant information which must be transported to the exception handler.''

!!!Exception wrapping

The idea of exception wrapping is to catch an excep
tion from a lower level function (such as the read_file function above), and throw a new exception object that contains the original exception (and also carries a file name.) This method seems to be particularly popular with C++ programmers with Java background.

Exception wrapping leads to the following problems:

*To wrap an exception object it must be copied, which may result in slicing.
*Wrapping is practically impossible to use in generic contexts.

The second point is actually special case of violating the exception neutrality principle. Most contexts in a program can not handle exceptions; such contexts should not interfere with the process of exception handling.

!!!The boost::exception solution

*Simply derive your exception types from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-21</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)_ *] = fopen
[struct boost::(:link </string>
+ <string>:).
*Confidently limit the throw site to provide only data that is available naturally.
*Use exception-neutral contexts between the throw and the catch to augment exceptions with more relevant data as they bubble up.

For example, in the throw statement below we only add the errno code, since this is the only failure-relevant information available in this context:

[@struct exception_base: virtual std::exception, virtual boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-8</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)_ *] = 2, "No such file or directory"
[struct boost::(:link </string>
+ <string>:) { };
struct io_error: virtual exception_base { };
struct file_read_error: virtual io_error { };

typedef boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-36</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)_ *] = tmp1.txt
[struct boost::(:link </string>
+ <string>:)<struct tag_errno_code,int> errno_code;

void
read_file( FILE * f )
 {
 ....
 size_t nr=fread(buf,1,count,f);
 if( ferror(f) )
 throw file_read_error() (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-34</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)_ *] = rb@]

In some development environments, the first line in that message can be clicked to show the location of the throw in the debugger, so it's easy to set a break point and run again to see the unexpected throw in the context of its call stack.

!!!Why doesn't boost::exception derive from std::exception?

Despite that (:link </string>
+ <string>|<<:) errno_code(errno);
 ....
 }@]

In a higher exception-neutral context, we add the file name to ''any'' exception that derives from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-46</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|virtual inheritance should be used in deriving from base exception types:), quite often exception types (including the ones defined in the standard library) don't derive from std::exception virtually.

If boost::(:link </string>
+ <string>:):

[@typedef boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) derives from std::exception, using the (:link </string>
+ <string>:)<struct tag_file_name,std::string> file_name;

....
try
 {
 if( FILE * fp=fopen("foo.txt","rt") )
 {
 shared_ptr<FILE> f(fp,fclose);
 ....
 read_file(fp); //throws types deriving from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-71</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) function with such user-defined types would introduce dangerous ambiguity which would break all catch(std::exception &) statements.

Of course, boost::(:link </string>
+ <string>:)
 do_something();
 ....
 }
 else
 throw file_open_error() (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) should not be used to replace std::exception as a base type in exception type hierarchies. Instead, it should be included as a virtual base, in addition to std::exception (which should probably also be derived virtually.)

!!!Why is boost::exception abstract?

To prevent exception-neutral contexts from erroneously erasing the type of the original exception when adding (:link </string>
+ <string>|<<:) errno_code(errno);
 }
catch( boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) to an active exception object:

[@catch( boost::(:link </string>
+ <string>:) & e )
 {
 e (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) & e )
 {
 e (:link </string>
+ <string>|<<:) file_name("foo.txt");
 throw;
 }@]

Finally here is how the handler retrieves data from exceptions that derive from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|<<:) foo_info(foo);
 throw e; //Compile error: boost::(:link </string>
+ <string>:):

[@catch( io_error & e )
 {
 std::cerr << "I/O Error!\n";

 if( std::string const * fn=(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) is abstract
 }@]

The correct code is:

[@catch( boost::(:link </string>
+ <string>:)<file_name>(e) )
 std::cerr << "File name: " << *fn << "\n";

 if( int const * c=(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) & e )
 {
 e (:link </string>
+ <string>:)<errno_code>(e) )
 std::cerr << "OS says: " << strerror(*c) << "\n";
 }@]

In addition, boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|<<:) foo_info(foo);
 throw; //Okay, re-throwing the original exception object.
 }@]

!!!Why use operator<< overload for adding info to exceptions?

Before throwing an object of type that derives from boost::(:link </string>
+ <string>:) can be used to compose an automatic (if not user-friendly) message that contains all of the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:), it is often desirable to add one or more (:link </string>
+ <string>:) objects added to a boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) objects in it. The syntactic sugar provided by (:link </string>
- <variant>1</variant>
+ <string>:). This is useful for inclusion in logs and other diagnostic objects.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-58</id>
 </shared_ptr>
 </weak_ptr>
+ <size>27</size>
 <variant>2</variant>
- <string> mod="/":) allows this to be done directly in a throw expression:

[@throw error() (:link </string>
+ <string>(:auto !!:)

Some exception hierarchies can not be modified to make boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|<<:) foo_info(foo) (:link </string>
+ <string>:) a base type. In this case, the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-63</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|<<:) bar_info(bar);@]

!!!Why is operator<< allowed to throw?

This question is referring to the following issue. Consider this throw statement example:

[@throw file_open_error() (:link </string>
+ <string>:) function template can be used to make exception objects derive from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|<<:) file_name(fn);@]

The intention here is to throw a file_open_error, however if (:link </string>
+ <string>:) anyway. Here is an example:

[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-11</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> mod="/":) fails to copy the std::string contained in the file_name (:link </string>
+ <string>:)>
#include <stdexcept>

typedef boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) wrapper, a std::bad_alloc could propagate instead. This behavior seems undesirable to some programmers.

Bjarne Stroustrup, The C++ Programming Language, 3rd Edition, page 371:

->''"Throwing an exception requires an object to throw. A C++ implementation is required to have enough spare memory to be able to throw bad_alloc in case of memory exhaustion. However, it is possible that throwing some other exception will cause memory exhaustion."''

Therefore, the language itself does not guarantee that an attempt to throw an exception is guaranteed to throw an object of the specified type; propagating a std::bad_alloc seems to be a possibility even outside of the scope of Boost Exception.
</string>
- </pair>
- <pair>
+ <string>:)<struct tag_std_range_min,size_t> std_range_min;
typedef boost::(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
+ <string>:)<struct tag_std_range_max,size_t> std_range_max;
typedef boost::(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

E must be boost::(:link </string>
+ <string>:)<struct tag_std_range_index,size_t> std_range_index;

template <class T>
class
my_container
 {
 public:

 size_t size() const;

 T const &
 operator[]( size_t i ) const
 {
 if( i > size() )
 throw boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-63</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:), or a type that derives (indirectly) from boost::(:link </string>
+ <string>:)(std::range_error("Index out of range")) <<
 std_range_min(0) <<
 std_range_max(size()) <<
 std_range_index(i);
 //....
 }
 };
@]

The call to (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-63</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).

!!!!Postcondition:

A copy of v is stored into x. If x already contains data of type (:link </string>
+ <string>:)<T> gets us an object of ''unspecified type'' which is guaranteed to derive from both boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<Tag,T>, that data is overwritten. Basic exception safety guarantee.

!!!!Returns:

x.

(:include throws:)
</string>
- </pair>
- <pair>
+ <string>:) and T. This makes it possible to use (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-58</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include decl:)

!!!!Effects:

* Default constructor: initializes an empty boost::(:link </string>
+ <string> mod="/":) to store additional information in the exception object. The exception can be intercepted as T &, so existing exception handling will not break. It can also be intercepted as boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) object.
* Copy constructor: initializes a boost::(:link </string>
+ <string>:) &, so that (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
@@ -10014,922 +10019,913 @@
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) object which shares ownership with x of all data added through (:link </string>
- <variant>1</variant>
+ <string>|more information can be added to the exception at a later time:).
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-59</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string> mod="/":), including data that is added at a future time.

!!!!Throws:

Nothing.
</string>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-59</id>
+ <id>-60</id>
 </shared_ptr>
 </weak_ptr>
 <size>1</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

This function must not be called outside of a catch block.

!!!!Returns:

A pointer of type E to the current exception object, or null if the current exception object can not be converted to E *.

!!!!Throws:

Nothing.
</string>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-60</id>
+ <id>-61</id>
 </shared_ptr>
 </weak_ptr>
- <size>11</size>
+ <size>1</size>
 <variant>2</variant>
- <string>!!!!Example:

this is a possible output from the (:link </string>
- <variant>1</variant>
+ <string>(:auto !!:)

(:pagelist tags="macro":)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
+ <size>39</size>
 <variant>2</variant>
- <string>:) function, as used in ''libs/exception/example/example_io.cpp:''

[@example_io.cpp(70): Throw in function class boost::shared_ptr<struct _iobuf> __cdecl my_fopen(const char *,const char *)
Dynamic exception type: class boost::exception_detail::clone_impl<struct fopen_error>
std::exception::what: example_io error
[struct boost::(:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

The (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-21</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)_ *] = fopen
[struct boost::(:link </string>
+ <string>:) function must not be called outside of a catch block.

In addition, to safely copy an exception from one thread to another, if the exception object is copied by </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-8</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)_ *] = 2, "No such file or directory"
[struct boost::(:link </string>
+ <string> or </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-36</id>
+ <id>-12</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)_ *] = tmp1.txt
[struct boost::(:link </string>
+ <string>, the two copies must not have shared state. Exceptions that have value-type semantics (as well as the boost::</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-34</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)_ *] = rb@]
</string>
- </pair>
- <pair>
+ <string> type itself) satisfy this requirement.

!!!!Returns:

* An (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-61</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
- <size>7</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard (:link </string>
+ <string>:) that refers to the currently handled exception or a copy of the currently handled exception.
* If the function needs to allocate memory and the attempt fails, it returns an (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) instance for transporting a relevant text file line number, for example in parse error exceptions deriving from boost::(:link </string>
+ <string>:) that refers to an instance of std::bad_alloc.

!!!!Throws:

Nothing.

!!!!Notes:

* It is unspecified whether the return values of two successive calls to (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).

!!!Example:

(:include </string>
+ <string>:) refer to the same exception object.
* Correct implementation of (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-13</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
</string>
- </pair>
- <pair>
+ <string>:) may require compiler support, unless (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-62</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !:)

This is an alphabetical list of all Boost Exception documentation pages.

(:pagelist fmt="index" except_tags="index noindex" mod="w":)
</string>
- </pair>
- <pair>
+ <string>:) was used at the time the currently handled exception object was passed to throw. Whenever (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-63</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
- <size>17</size>
 <variant>2</variant>
- <string>(:auto !!!:)

The following example demonstrates how errno can be stored in exception objects using Boost Exception:

[@#include <(:link </string>
+ <string>:) fails to properly copy the current exception object, it returns an (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-41</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <iostream>

typedef boost::(:link </string>
+ <string>:) to an object of type that is as close as possible to the original exception type, using (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-77</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<struct tag_my_info,int> my_info; //(1)

struct my_error: virtual boost::(:link </string>
+ <string>:) as a final fallback. All such types derive from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:), virtual std::exception { }; //(2)

void
f()
 {
 throw my_error() << my_info(42); //(3)
 }@]

First, we instantiate the (:link </string>
+ <string>:), and:
** if the original exception object derives from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) template using a unique identifier -- tag_my_info, and the type of the info it identifies -- int. This provides compile-time type safety for the various values stored in exception objects.

Second, we define class my_error, which derives from boost::(:link </string>
+ <string>:), then the boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).

Finally, (3) illustrates how the typedef from (1) can be used with (:link </string>
+ <string>:) sub-object of the object referred to by the returned (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>|operator<<:) to store values in exception objects at the point of the throw.

The stored my_info value can be recovered at a later time like this:

[@// ...continued

void
g()
 {
 try
 {
 f();
 }
 catch(
 my_error & x )
 {
 if( int const * mi=boost::(:link </string>
+ <string>:) is initialized by the boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<my_info>(x) )
 std::cerr << "My info: " << *mi;
 }
 }@]

The (:link </string>
+ <string>:) copy constructor;
** if available, the exception contains the std::type_info of the original exception object, accessible through (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) function template is instantiated with the typedef from (1), and is passed an exception object of a polymorphic type. If the exception object contains the requested value, err will point to it; otherwise a null pointer is returned.
</string>
- </pair>
- <pair>
+ <string>:)<(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-64</id>
+ <id>-29</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ <string>:)>.
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-65</id>
+ <id>-63</id>
 </shared_ptr>
 </weak_ptr>
 <size>5</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

This type is used by the (:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

T must be a class with an accessible no-throw copy constructor as per (15.5.1).

!!!!Returns:

* If T derives from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) support in Boost Exception. Please see (:link </string>
+ <string>:), the returned object is of type T and is a copy of x.
* Otherwise, the returned object is of an unspecified type that derives publicly from both T and boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).
</string>
+ <string>:). The T sub-object is initialized from x by the T copy constructor.

!!!!Throws:

Nothing.
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-66</id>
+ <id>-64</id>
 </shared_ptr>
 </weak_ptr>
 <size>1</size>
 <variant>2</variant>
- <string>(:auto !!!:)

!!!Synopsis

(:include synopsis:)
</string>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-67</id>
+ <id>-65</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
+ <size>15</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
+ <string>(:auto !!!:)

Here is how cloning can be enabled in a throw-expression (15.1):

[@#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-68</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
+ <string>:)>
#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-69</id>
+ <id>-40</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

(:pagelist tags="macro":)
</string>
- </pair>
- <pair>
+ <string>:)>
#include <stdio.h>
#include <errno.h>

struct file_read_error: virtual boost::(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
- <size>39</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

The (:link </string>
+ <string>:) { };

void
file_read( FILE * f, void * buffer, size_t size )
 {
 if( size!=fread(buffer,1,size,f) )
 throw boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) function must not be called outside of a catch block.

In addition, to safely copy an exception from one thread to another, if the exception object is copied by </string>
+ <string>:)(file_read_error()) <<
 boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-41</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> or </string>
+ <string>:)(errno);
 }@]

Of course, (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-42</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>, the two copies must not have shared state. Exceptions that have value-type semantics (as well as the boost::</string>
+ <string>:) may be used with any exception type; there is no requirement that it should derive from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> type itself) satisfy this requirement.

!!!!Returns:

* An (:link </string>
- <variant>1</variant>
+ <string>:).
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-66</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>1</size>
+ <variant>2</variant>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
+ <size>15</size>
 <variant>2</variant>
- <string>:) that refers to the currently handled exception or a copy of the currently handled exception.
* If the function needs to allocate memory and the attempt fails, it returns an (:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Effects:

* If BOOST_NO_EXCEPTIONS is not defined, boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) that refers to an instance of std::bad_alloc.

!!!!Throws:

Nothing.

!!!!Notes:

* It is unspecified whether the return values of two successive calls to (:link </string>
+ <string>:)(e) throws an exception of unspecified type that derives publicly from E and from boost::</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) refer to the same exception object.
* Correct implementation of (:link </string>
+ <string>.
* If BOOST_NO_EXCEPTIONS is defined, the function is left undefined, and the user is expected to supply an appropriate definition. Callers of (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) may require compiler support, unless (:link </string>
+ <string>:) are allowed to assume that the function never returns; therefore, if the user-defined (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) was used at the time the currently handled exception object was passed to throw. Whenever (:link </string>
+ <string>:) returns, the behavior is undefined.

!!!!Requirements:

E must derive publicly from std::exception. E may or may not derive from boost::</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) fails to properly copy the current exception object, it returns an (:link </string>
+ <string>.

!!!!Notes:

* The emitted exception can be intercepted as E &, std::exception &, or boost::exception &.
* The emitted exception supports boost::</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) to an object of type that is as close as possible to the original exception type, using (:link </string>
+ <string>.
* If BOOST_EXCEPTION_DISABLE is defined and BOOST_NO_EXCEPTIONS is not defined, boost::</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-65</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) as a final fallback. All such types derive from boost::(:link </string>
- <variant>1</variant>
+ <string>(e) equivalent to throw e.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
+ <size>13</size>
 <variant>2</variant>
- <string>:), and:
** if the original exception object derives from boost::(:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

* ErrorInfo must be an instance of the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:), then the boost::(:link </string>
+ <string>:) template.
* E must be polymorphic.

!!!!Returns:

* If dynamic_cast<boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) sub-object of the object referred to by the returned (:link </string>
+ <string>:) const *>(&x) is 0, or if x does not store an object of type ErrorInfo, the returned value is null.
* Otherwise, the returned pointer points to the stored value (use (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) is initialized by the boost::(:link </string>
+ <string> mod="/":) to store values in exception objects.) When x is destroyed, any pointers returned by (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) copy constructor;
** if available, the exception contains the std::type_info of the original exception object, accessible through (:link </string>
+ <string>:) become invalid.

!!!!Throws:

Nothing.

!!!!Note:

The interface of (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-32</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)<(:link </string>
+ <string>:) may be affected by the build (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-77</id>
+ <id>-22</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>.
</string>
+ <string>:).
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-71</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
+ <size>23</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

T must be a class with an accessible no-throw copy constructor as per (15.5.1).

!!!!Returns:

* If T derives from boost::(:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

The (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:), the returned object is of type T and is a copy of x.
* Otherwise, the returned object is of an unspecified type that derives publicly from both T and boost::(:link </string>
+ <string>:) type can be used to refer to a copy of an exception object. It is Default Constructible, Copy Constructible, Assignable and Equality Comparable; (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:). The T sub-object is initialized from x by the T copy constructor.

!!!!Throws:

Nothing.
</string>
- </pair>
- <pair>
+ <string>:)'s operations do not throw.

The referenced object remains valid at least as long as there is an (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-72</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
+ <string>:) object that refers to it.

Two instances of (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-73</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
- <size>15</size>
 <variant>2</variant>
- <string>(:auto !!!:)

Here is how cloning can be enabled in a throw-expression (15.1):

[@#include <(:link </string>
+ <string>:) are equivalent and compare equal if and only if they refer to the same exception.

The default constructor of (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <(:link </string>
+ <string>:) produces the null value of the type. The null value is equivalent only to itself.

!!!!Thread safety:

The </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-18</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <stdio.h>
#include <errno.h>

struct file_read_error: virtual boost::(:link </string>
+ <string> type is "as thread-safe as built-in types":

* An </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) { };

void
file_read( FILE * f, void * buffer, size_t size )
 {
 if( size!=fread(buffer,1,size,f) )
 throw boost::(:link </string>
+ <string> instance can be "read" simultaneously by multiple threads
* Different </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(file_read_error()) <<
 boost::(:link </string>
+ <string> instances can be "written to" simultaneously by multiple threads, even when these instances refer to the same exception object

All other simultaneous accesses result in undefined behavior.

!!!!Nesting of exceptions:

An (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-8</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)(errno);
 }@]

Of course, (:link </string>
+ <string>:) can be added as (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) may be used with any exception type; there is no requirement that it should derive from boost::(:link </string>
+ <string>:) to any boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).
</string>
+ <string>:). This is a convenient way to nest exceptions. There is no limit on the depth of the nesting, however cyclic references result in undefined behavior.
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-74</id>
+ <id>-70</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
+ <size>7</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
- </pair>
- <pair>
+ <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard (:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-75</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
 <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

E must be boost::(:link </string>
+ <string>:) instance for transporting the string passed as a second argument to fopen in exceptions indicating fopen failures and deriving from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:), or a type that derives (indirectly) from boost::(:link </string>
+ <string>:).

!!!Example:

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-46</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:).

!!!!Effects:

Equivalent to x << v.(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html#accessing_elements|get:)<0>() << ... << v.(:link http://www.boost.org/libs/tuple/doc/tuple_users_guide.html#accessing_elements|get:)<N>().

!!!!Returns:

x.

(:include throws:)
</string>
+ <string>:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-76</id>
+ <id>-71</id>
 </shared_ptr>
 </weak_ptr>
 <size>1</size>
 <variant>2</variant>
- <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ <string>(:auto !!!:)

(:include synopsis:)

!!!!Requirements:

This function must not be called outside of a catch block.

!!!!Returns:

A pointer of type E to the current exception object, or null if the current exception object can not be converted to E *.

!!!!Throws:

Nothing.
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-77</id>
- </shared_ptr>
- </weak_ptr>
- <size>9</size>
- <variant>2</variant>
- <string>(:auto !!!:)

(:include synopsis:)

This </string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-50</id>
+ <id>-72</id>
 </shared_ptr>
 </weak_ptr>
+ <size>11</size>
 <variant>2</variant>
- <string> typedef is used by </string>
+ <string>!!!!Example:

this is a possible output from the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> if it defaults to returning an </string>
+ <string>:) function, as used in ''libs/exception/example/example_io.cpp:''

[@example_io.cpp(70): Throw in function class boost::shared_ptr<struct _iobuf> __cdecl my_fopen(const char *,const char *)
Dynamic exception type: class boost::exception_detail::clone_impl<struct fopen_error>
std::exception::what: example_io error
[struct boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-5</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> that refers to an object of type </string>
+ <string>:)_ *] = fopen
[struct boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-65</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string>, to record in it the std::type_info of the original exception object.</string>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-78</id>
+ <id>-41</id>
 </shared_ptr>
 </weak_ptr>
- <size>11</size>
 <variant>2</variant>
- <string>(:auto !!:)

Boost Exception supports transporting of exception objects between threads through cloning. This system is similar to (:link http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2179.html|N2179:), but because Boost Exception can not rely on language support, the use of (:link </string>
+ <string>:)_ *] = 2, "No such file or directory"
[struct boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-48</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) at the time of the throw is required in order to use cloning.

!!!!Note:

All exceptions emitted by the familiar function boost::(:link </string>
+ <string>:)_ *] = tmp1.txt
[struct boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-70</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) are guaranteed to derive from boost::(:link </string>
- <variant>1</variant>
+ <string>:)_ *] = rb@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-73</id>
 </shared_ptr>
 </weak_ptr>
+ <size>7</size>
 <variant>2</variant>
- <string>:) and to support cloning.

(:include </string>
+ <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-73</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
(:include </string>
+ <string>:) instance for transporting a relevant text file line number, for example in parse error exceptions deriving from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-79</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)
</string>
- </pair>
- <pair>
+ <string>:).

!!!Example:

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-79</id>
+ <id>-46</id>
 </shared_ptr>
 </weak_ptr>
- <size>37</size>
 <variant>2</variant>
- <string>(:auto !!!:)

When you catch an exception, you can call (:link </string>
- <variant>1</variant>
+ <string>:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-74</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:) to get an (:link </string>
- <variant>1</variant>
+ <string>(:auto !:)

This is an alphabetical list of all Boost Exception documentation pages.

(:pagelist fmt="index" except_tags="index noindex" mod="w":)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-75</id>
 </shared_ptr>
 </weak_ptr>
+ <size>17</size>
 <variant>2</variant>
- <string>:) object:

[@#include <(:link </string>
+ <string>(:auto !!!:)

The following example demonstrates how errno can be stored in exception objects using Boost Exception:

[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-76</id>
+ <id>-11</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <boost/thread.hpp>
#include <boost/bind.hpp>

void do_work(); //throws cloning-enabled boost::(:link </string>
+ <string>:)>
#include <iostream>

typedef boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)s

void
worker_thread( boost::(:link </string>
+ <string>:)<struct tag_my_info,int> my_info; //(1)

struct my_error: virtual boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) & error )
 {
 try
 {
 do_work();
 error = boost::(:link </string>
+ <string>:), virtual std::exception { }; //(2)

void
f()
 {
 throw my_error() << my_info(42); //(3)
 }@]

First, we instantiate the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)();
 }
 catch(
 ... )
 {
 error = boost::(:link </string>
+ <string>:) template using a unique identifier -- tag_my_info, and the type of the info it identifies -- int. This provides compile-time type safety for the various values stored in exception objects.

Second, we define class my_error, which derives from boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)();
 }
 }@]

In the above example, note that (:link </string>
+ <string>:).

Finally, (3) illustrates how the typedef from (1) can be used with (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) captures the original type of the exception object. The exception can be thrown again using the (:link </string>
+ <string>|operator<<:) to store values in exception objects at the point of the throw.

The stored my_info value can be recovered at a later time like this:

[@// ...continued

void
g()
 {
 try
 {
 f();
 }
 catch(
 my_error & x )
 {
 if( int const * mi=boost::(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-45</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) function:

[@// ...continued

void
work()
 {
 boost::(:link </string>
+ <string>:)<my_info>(x) )
 std::cerr << "My info: " << *mi;
 }
 }@]

The (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) error;
 boost::(:link http://www.boost.org/doc/html/boost/thread.html|thread:) t( boost::(:link http://www.boost.org/libs/bind/bind.html|bind:)(worker_thread,boost::(:link http://www.boost.org/doc/html/ref.html|ref:)(error)) );
 t.(:link http://www.boost.org/doc/html/boost/thread.html|join:)();
 if( error )
 boost::(:link </string>
- <variant>1</variant>
+ <string>:) function template is instantiated with the typedef from (1), and is passed an exception object of a polymorphic type. If the exception object contains the requested value, err will point to it; otherwise a null pointer is returned.
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-45</id>
+ <id>-76</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:)(error);
 }@]

Note that (:link </string>
- <variant>1</variant>
+ <string>(:auto !!:)

!!!Synopsis

(:include synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-77</id>
 </shared_ptr>
 </weak_ptr>
+ <size>5</size>
 <variant>2</variant>
- <string>:) could fail to copy the original exception object in the following cases:

* if there is not enough memory, in which case the returned (:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

This type is used by the (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) points to an instance of std::bad_alloc, or
* if (:link </string>
+ <string>:) support in Boost Exception. Please see (:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-7</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) was not used in the throw-expression passed to the original throw statement and the current implementation does not have the necessary compiler-specific support to copy the exception automatically, in which case the returned (:link </string>
- <variant>1</variant>
+ <string>:).
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-78</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:) points to an instance of (:link </string>
- <variant>1</variant>
+ <string>(:auto !!!:)

!!!Synopsis

(:include synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-65</id>
+ <id>-79</id>
 </shared_ptr>
 </weak_ptr>
+ <size>5</size>
 <variant>2</variant>
- <string>:).

Regardless, the use of (:link </string>
+ <string>(:auto !!!:)

(:include synopsis:)

This type is designed to be used as a standard </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) and (:link </string>
+ <string> instance for transporting strings returned by std::type_info::name in exceptions deriving from boost::</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-45</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:) in the above examples is well-formed.
</string>
+ <string> objects.</string>
 </pair>
 </sorted>
 </object>
@@ -11078,7 +11074,9 @@
 <id>-19</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>1</size>
+ <variant>2</variant>
+ <string>!!!!Throws:

std::bad_alloc, or any exception emitted by the T copy constructor.
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -11150,7 +11148,9 @@
 <id>-27</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>1</size>
+ <variant>2</variant>
+ <string>!!!!Throws:

std::bad_alloc, or any exception emitted by T1..TN copy constructor.
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -11366,9 +11366,7 @@
 <id>-51</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
- <variant>2</variant>
- <string>!!!!Throws:

Any exception emitted by v's copy constructor.</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
@@ -11404,7 +11402,9 @@
 <id>-55</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>1</size>
+ <variant>2</variant>
+ <string>!!!!Throws:

Any exception emitted by v's copy constructor.</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -11422,9 +11422,7 @@
 <id>-57</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
- <variant>2</variant>
- <string>!!!!Throws:

std::bad_alloc, or any exception emitted by the T copy constructor.
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
@@ -11586,9 +11584,7 @@
 <id>-75</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
- <variant>2</variant>
- <string>!!!!Throws:

std::bad_alloc, or any exception emitted by T1..TN copy constructor.
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
@@ -11647,38 +11643,36 @@
 <id>-5</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
+ <size>5</size>
 <variant>2</variant>
- <string>[@#include <</string>
+ <string>`#include <</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-59</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>>
#include <boost/tuple/tuple.hpp>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
- </pair>
- <pair>
+ <string>>

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-6</id>
+ <id>-59</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
 <variant>2</variant>
- <string>`#include <(:link </string>
- <variant>1</variant>
+ <string> synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-72</id>
+ <id>-6</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)>\\

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
@@ -11689,16 +11683,16 @@
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>`#include <</string>
+ <string>[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-30</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
+ <string>:)>

namespace
boost
 {
 template <class> class weak_ptr;
(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -11707,91 +11701,131 @@
 <id>-8</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
- <variant>2</variant>
- <string>`#include <</string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-18</id>
+ <id>-9</id>
 </shared_ptr>
 </weak_ptr>
+ <size>3</size>
 <variant>2</variant>
- <string>>

(:include </string>
+ <string>`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-18</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)
</string>
+ <string>:)>

[@(:include decl:)@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-9</id>
+ <id>-10</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>0</size>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-11</id>
 </shared_ptr>
 </weak_ptr>
 <size>1</size>
 <variant>2</variant>
- <string>[@namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
+ <string>[@(:include api:)@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-12</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>[@#include <(:link </string>
+ <string>`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
+ <string>:)>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-11</id>
+ <id>-13</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>5</size>
+ <variant>2</variant>
+ <string>`#include <(:link </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-64</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string>:)>\\
`#include <</string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-28</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string>>\\

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-12</id>
+ <id>-14</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>5</size>
+ <variant>2</variant>
+ <string>`#include <</string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-56</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string>>

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-13</id>
+ <id>-56</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <variant>2</variant>
+ <string> synopsis:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-14</id>
+ <id>-15</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -11801,20 +11835,11 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

namespace
boost
 {
 template <class> class weak_ptr;
(:include api pre_indent="4":)
 }@]
</string>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-15</id>
- </shared_ptr>
- </weak_ptr>
- <size>0</size>
+ <string>:)>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -11825,21 +11850,21 @@
 </weak_ptr>
 <size>5</size>
 <variant>2</variant>
- <string>`#include <</string>
+ <string>`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-20</id>
+ <id>-7</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>>

(:include </string>
+ <string>:)>

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-20</id>
+ <id>-7</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -11852,35 +11877,44 @@
 <id>-17</id>
 </shared_ptr>
 </weak_ptr>
+ <size>0</size>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-18</id>
+ </shared_ptr>
+ </weak_ptr>
 <size>1</size>
 <variant>2</variant>
- <string>(:include api:)
</string>
+ <string>[@namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-18</id>
+ <id>-19</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>[@#include <</string>
+ <string>`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>>
#include <errno.h>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
+ <string>:)>\\

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-19</id>
+ <id>-20</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -11889,56 +11923,74 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-20</id>
+ <id>-21</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>0</size>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-22</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>0</size>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-23</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>[@#include <</string>
+ <string>`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>>
#include <string>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
+ <string>:)>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-21</id>
+ <id>-24</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
- <variant>2</variant>
- <string>`#include <</string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-67</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
+ <size>3</size>
 <variant>2</variant>
- <string>>

(:include </string>
+ <string>[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-67</id>
+ <id>-50</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)
</string>
+ <string>:)>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-22</id>
+ <id>-26</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -11947,7 +11999,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-23</id>
+ <id>-27</id>
 </shared_ptr>
 </weak_ptr>
 <size>5</size>
@@ -11957,104 +12009,104 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-72</id>
+ <id>-37</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>\\
`#include <</string>
+ <string>:)>

[@namespace
boost
 {
(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-76</id>
+ <id>-27</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>>\\

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
+ <string> decl pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-24</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
+ <size>3</size>
 <variant>2</variant>
- <string>`#include <</string>
+ <string>[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-52</id>
+ <id>-50</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>>

(:include </string>
- <variant>1</variant>
+ <string>:)>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-52</id>
+ <id>-29</id>
 </shared_ptr>
 </weak_ptr>
+ <size>3</size>
 <variant>2</variant>
- <string> synopsis:)
</string>
- </pair>
- <pair>
+ <string>`#include <</string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-25</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
 <variant>2</variant>
- <string>[@#include <(:link </string>
- <variant>1</variant>
+ <string>>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-30</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-26</id>
+ <id>-31</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
- <variant>2</variant>
- <string>`#include <(:link </string>
- <variant>1</variant>
+ <size>0</size>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-14</id>
+ <id>-32</id>
 </shared_ptr>
 </weak_ptr>
+ <size>3</size>
 <variant>2</variant>
- <string>:)>

(:include </string>
+ <string>`#include <</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-14</id>
+ <id>-36</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> synopsis:)
</string>
+ <string>>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-27</id>
+ <id>-33</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -12064,7 +12116,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-17</id>
+ <id>-39</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -12074,7 +12126,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-28</id>
+ <id>-34</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -12083,7 +12135,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-29</id>
+ <id>-35</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -12092,7 +12144,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-30</id>
+ <id>-36</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -12102,7 +12154,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-50</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -12112,38 +12164,27 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-31</id>
+ <id>-37</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>`#include <(:link </string>
+ <string>[@#include <</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-17</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string>:)>

[@namespace
boost
 {
(:include decl:)
 }@]
</string>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-32</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
+ <string>>
#include <boost/tuple/tuple.hpp>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-38</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -12153,85 +12194,67 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-76</id>
+ <id>-64</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
+ <string>:)>\\

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-34</id>
- </shared_ptr>
- </weak_ptr>
- <size>5</size>
- <variant>2</variant>
- <string>`#include <</string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-64</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string>>

(:include </string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-64</id>
+ <id>-39</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string> synopsis:)
</string>
+ <string>(:include api:)
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-35</id>
+ <id>-40</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>`#include <(:link </string>
+ <string>[@#include <</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-72</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>\\

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
+ <string>>
#include <errno.h>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-36</id>
+ <id>-41</id>
 </shared_ptr>
 </weak_ptr>
 <size>5</size>
 <variant>2</variant>
- <string>`#include <(:link </string>
+ <string>`#include <</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-74</id>
+ <id>-40</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

(:include </string>
+ <string>>

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-74</id>
+ <id>-40</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -12241,47 +12264,47 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-37</id>
+ <id>-42</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>1</size>
+ <variant>2</variant>
+ <string>[@namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-43</id>
 </shared_ptr>
- </weak_ptr>
- <size>1</size>
- <variant>2</variant>
- <string>[@namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
+ </weak_ptr>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-39</id>
+ <id>-44</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>`#include <(:link </string>
+ <string>[@#include <</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@(:include decl:)@]
</string>
+ <string>>
#include <string>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-40</id>
+ <id>-45</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -12290,18 +12313,16 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-41</id>
+ <id>-46</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
- <variant>2</variant>
- <string>[@(:include api:)@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-42</id>
+ <id>-47</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -12311,64 +12332,66 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-76</id>
+ <id>-64</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
+ <string>:)>\\

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-43</id>
+ <id>-48</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <size>5</size>
+ <variant>2</variant>
+ <string>`#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-44</id>
+ <id>-66</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <variant>2</variant>
+ <string>:)>

(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-45</id>
+ <id>-66</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
 <variant>2</variant>
- <string>`#include <(:link </string>
- <variant>1</variant>
+ <string> synopsis:)
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-76</id>
+ <id>-49</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string>:)>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-46</id>
+ <id>-50</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <size>1</size>
+ <variant>2</variant>
+ <string>[@namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-47</id>
+ <id>-51</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -12377,7 +12400,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-48</id>
+ <id>-52</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -12387,7 +12410,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -12397,7 +12420,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -12407,7 +12430,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-50</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -12417,7 +12440,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-50</id>
+ <id>-54</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -12427,7 +12450,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -12437,7 +12460,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-51</id>
+ <id>-55</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -12447,7 +12470,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-10</id>
+ <id>-25</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -12457,7 +12480,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-52</id>
+ <id>-56</id>
 </shared_ptr>
 </weak_ptr>
 <size>5</size>
@@ -12467,7 +12490,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -12476,7 +12499,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-33</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -12486,7 +12509,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-53</id>
+ <id>-57</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -12495,7 +12518,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-54</id>
+ <id>-58</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -12504,47 +12527,38 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-55</id>
+ <id>-59</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <size>3</size>
+ <variant>2</variant>
+ <string>[@#include <(:link </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
 <variant>2</variant>
- <string>[@namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
+ <string>:)>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-57</id>
- </shared_ptr>
- </weak_ptr>
- <size>3</size>
- <variant>2</variant>
- <string>`#include <(:link </string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-10</id>
+ <id>-60</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>:)>\\

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
+ <string>[@#include <boost/shared_ptr.hpp>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-58</id>
+ <id>-61</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -12553,74 +12567,67 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-59</id>
+ <id>-62</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>`#include <</string>
+ <string>`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-9</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-60</id>
- </shared_ptr>
- </weak_ptr>
- <size>0</size>
+ <string>:)>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-61</id>
+ <id>-63</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
+ <size>3</size>
 <variant>2</variant>
- <string>`#include <(:link </string>
+ <string>`#include <</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-25</id>
+ <id>-78</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

(:include </string>
- <variant>1</variant>
+ <string>>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
+ </pair>
+ <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-25</id>
+ <id>-64</id>
 </shared_ptr>
 </weak_ptr>
+ <size>3</size>
 <variant>2</variant>
- <string> synopsis:)
</string>
- </pair>
- <pair>
+ <string>[@#include <string>

namespace
boost
 {
(:include </string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-62</id>
+ <id>-53</id>
 </shared_ptr>
 </weak_ptr>
- <size>0</size>
+ <variant>2</variant>
+ <string> decl pre_indent="4":)

(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-63</id>
+ <id>-65</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -12629,27 +12636,27 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-64</id>
+ <id>-66</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>[@#include <</string>
+ <string>[@#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>>
#include <string>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
+ <string>:)>
#include <string>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-65</id>
+ <id>-67</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
@@ -12659,82 +12666,62 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-76</id>
+ <id>-39</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
+ <string>:)>

[@namespace
boost
 {
(:include decl:)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-66</id>
- </shared_ptr>
- </weak_ptr>
- <size>3</size>
- <variant>2</variant>
- <string>[@#include <</string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-38</id>
+ <id>-68</id>
 </shared_ptr>
 </weak_ptr>
+ <size>1</size>
 <variant>2</variant>
- <string>>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
+ <string>[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-67</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>[@#include <(:link </string>
+ <string>`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
+ <string>:)>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-68</id>
+ <id>-70</id>
 </shared_ptr>
 </weak_ptr>
- <size>1</size>
+ <size>5</size>
 <variant>2</variant>
- <string>[@#include <boost/shared_ptr.hpp>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
- </pair>
- <pair>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-69</id>
- </shared_ptr>
- </weak_ptr>
- <size>0</size>
- </pair>
- <pair>
+ <string>`#include <</string>
+ <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-70</id>
+ <id>-76</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
 <variant>2</variant>
- <string>`#include <(:link </string>
+ <string>>

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
@@ -12743,7 +12730,7 @@
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
+ <string> synopsis:)
</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -12759,7 +12746,7 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-66</id>
+ <id>-42</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
@@ -12772,24 +12759,51 @@
 <id>-72</id>
 </shared_ptr>
 </weak_ptr>
- <size>3</size>
+ <size>0</size>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-73</id>
+ </shared_ptr>
+ </weak_ptr>
+ <size>5</size>
 <variant>2</variant>
- <string>[@#include <string>

namespace
boost
 {
(:include </string>
+ <string>`#include <(:link </string>
+ <variant>1</variant>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-15</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string>:)>

(:include </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-49</id>
+ <id>-15</id>
+ </shared_ptr>
+ </weak_ptr>
+ <variant>2</variant>
+ <string> synopsis:)
</string>
+ </pair>
+ <pair>
+ <weak_ptr>
+ <expired>0</expired>
+ <shared_ptr>
+ <id>-74</id>
 </shared_ptr>
 </weak_ptr>
- <variant>2</variant>
- <string> decl pre_indent="4":)

(:include api pre_indent="4":)
 }@]
</string>
+ <size>0</size>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-73</id>
+ <id>-75</id>
 </shared_ptr>
 </weak_ptr>
 <size>0</size>
@@ -12798,108 +12812,90 @@
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-74</id>
+ <id>-76</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>[@#include <(:link </string>
+ <string>[@#include <</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-56</id>
+ <id>-18</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>
#include <string>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
+ <string>>
#include <string>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-75</id>
+ <id>-77</id>
 </shared_ptr>
 </weak_ptr>
- <size>5</size>
+ <size>3</size>
 <variant>2</variant>
 <string>`#include <(:link </string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-5</id>
- </shared_ptr>
- </weak_ptr>
- <variant>2</variant>
- <string>:)>

[@namespace
boost
 {
(:include </string>
- <variant>1</variant>
- <weak_ptr>
- <expired>0</expired>
- <shared_ptr>
- <id>-75</id>
+ <id>-28</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string> decl pre_indent="4":)
 }@]
</string>
+ <string>:)>

[@namespace
boost
 {
(:include decl pre_indent="4":)
 }@]
</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-76</id>
+ <id>-78</id>
 </shared_ptr>
 </weak_ptr>
 <size>3</size>
 <variant>2</variant>
- <string>[@#include <(:link </string>
+ <string>[@#include <</string>
 <variant>1</variant>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-38</id>
+ <id>-50</id>
 </shared_ptr>
 </weak_ptr>
 <variant>2</variant>
- <string>:)>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
+ <string>>

namespace
boost
 {
(:include api pre_indent="4":)
 }@]
</string>
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 <shared_ptr>
- <id>-70</id>
+ <id>-69</id>
 </shared_ptr>
 </weak_ptr>
- <string>exception_ptr free function</string>
+ <string>type</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-71</id>
+ <id>-70</id>
 </shared_ptr>
 </weak_ptr>
- <string>error_info free function</string>
+ <string>error_info_instance noalso type</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-72</id>
+ <id>-71</id>
 </shared_ptr>
 </weak_ptr>
- <string></string>
+ <string>function</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -15323,25 +15315,25 @@
 <id>-73</id>
 </shared_ptr>
 </weak_ptr>
- <string>noindex tutorial</string>
+ <string>error_info_instance noalso type</string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-75</id>
+ <id>-74</id>
 </shared_ptr>
 </weak_ptr>
- <string>error_info free function</string>
+ <string></string>
 </pair>
 <pair>
 <weak_ptr>
 <expired>0</expired>
 <shared_ptr>
- <id>-76</id>
+ <id>-75</id>
 </shared_ptr>
 </weak_ptr>
- <string></string>
+ <string>noalso noindex tutorial</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -15350,7 +15342,7 @@
 <id>-77</id>
 </shared_ptr>
 </weak_ptr>
- <string>type</string>
+ <string>exception_ptr type</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -15359,7 +15351,7 @@
 <id>-78</id>
 </shared_ptr>
 </weak_ptr>
- <string>tutorial</string>
+ <string>error_info</string>
 </pair>
 <pair>
 <weak_ptr>
@@ -15368,7 +15360,7 @@
 <id>-79</id>
 </shared_ptr>
 </weak_ptr>
- <string>noindex tutorial</string>
+ <string>error_info_instance noalso type</string>
 </pair>
 </sorted>
 </tag_index>

Modified: trunk/libs/exception/test/cloning_test.cpp
==============================================================================
--- trunk/libs/exception/test/cloning_test.cpp Mon Sep 9 19:14:48 2013 (r85633)
+++ trunk/libs/exception/test/cloning_test.cpp 2013-09-10 01:05:41 EDT (Tue, 10 Sep 2013) (r85634)
@@ -143,6 +143,8 @@
#ifndef BOOST_NO_RTTI
 std::type_info const * const * t=boost::get_error_info<boost::original_exception_type>(x);
 BOOST_TEST(t!=0 && *t!=0 && **t==typeid(T));
+ std::string s=diagnostic_information(x);
+ BOOST_TEST(!s.empty());
#endif
 }
 catch(

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