July 2013 - Boost - lists.boost.org

[build] bootstrap.sh is triply broken on MinGW
by Stephan T. Lavavej 18 Jul '13

18 Jul '13

Hi, For over a year I've been suffering from bootstrap.sh being broken on MinGW, although I figured out a horrible hackaround. In 1.54.0 two more breaks appeared, and I figured out real fixes for them. I'd like to offer my real fixes here, and request two things: (A) a real fix to replace my horrible hackaround for the original bug, and (B) bootstrap.sh to be tested on MinGW for each release, because it's clearly not receiving sufficient coverage. The first break appears to be tracked by https://svn.boost.org/trac/boost/ticket/5680 and https://svn.boost.org/trac/boost/ticket/6350 . The problem is that bootstrap.sh and b2.exe don't agree on what MinGW should be called: is it mingw or is it gcc? No permutations of toolsets passed on the command lines work. I've used the following horrible hackaround in 1.49.0 through 1.54.0 inclusive: diff -aurN boost_1_54_0/bootstrap.sh boost_1_54_0-fixed/bootstrap.sh --- boost_1_54_0/bootstrap.sh 2013-03-09 14:55:05 -0800 +++ boost_1_54_0-fixed/bootstrap.sh 2013-07-18 00:12:38 -0700 @@ -215,7 +215,7 @@ if test "x$BJAM" = x; then echo -n "Building Boost.Build engine with toolset $TOOLSET... " pwd=`pwd` - (cd "$my_dir/tools/build/v2/engine" && ./build.sh "$TOOLSET") > bootstrap.log 2>&1 + (cd "$my_dir/tools/build/v2/engine" && ./build.sh mingw) > bootstrap.log 2>&1 if [ $? -ne 0 ]; then echo echo "Failed to build Boost.Build build engine" Of course, this is completely unacceptable for other toolsets, but I basically know nothing about Boost's build machinery, so I can't figure out a real fix. Ideally, bootstrap.sh followed by b2.exe would work automatically, without toolsets being specified. However, I would still be extremely happy if it worked with manually specified toolsets, as long as I didn't have to patch or sed files. The second and third breaks are new to 1.54.0 and are tracked by https://svn.boost.org/trac/boost/ticket/8762 . Here are my fixes that should work for all platforms: diff -aurN boost_1_54_0/tools/build/v2/engine/build.jam boost_1_54_0-fixed/tools/build/v2/engine/build.jam --- boost_1_54_0/tools/build/v2/engine/build.jam 2013-05-20 21:14:18 -0700 +++ boost_1_54_0-fixed/tools/build/v2/engine/build.jam 2013-07-18 00:12:43 -0700 @@ -483,8 +483,8 @@ make.c make1.c mem.c object.c option.c output.c parse.c pathsys.c regexp.c rules.c scan.c search.c subst.c w32_getreg.c timestamp.c variable.c modules.c strings.c filesys.c builtins.c class.c cwd.c native.c md5.c - modules/set.c modules/path.c modules/regex.c modules/property-set.c - modules/sequence.c modules/order.c ; + [ .path modules set.c ] [ .path modules path.c ] [ .path modules regex.c ] + [ .path modules property-set.c ] [ .path modules sequence.c ] [ .path modules order.c ] ; if $(OS) = NT { jam.source += execnt.c filent.c pathnt.c ; It appears that build.jam needs to use this .path machinery to generate either forward slashes or backslashes. When forward slashes are literally used, the bootstrap complains that it doesn't know how to make the corresponding object files. Once this is fixed, the final break is revealed: diff -aurN boost_1_54_0/tools/build/v2/engine/build.sh boost_1_54_0-fixed/tools/build/v2/engine/build.sh --- boost_1_54_0/tools/build/v2/engine/build.sh 2013-05-20 21:14:18 -0700 +++ boost_1_54_0-fixed/tools/build/v2/engine/build.sh 2013-07-18 00:12:43 -0700 @@ -247,18 +247,18 @@ BJAM_SOURCES="\ command.c compile.c constants.c debug.c execcmd.c frames.c function.c glob.c\ hash.c hdrmacro.c headers.c jam.c jambase.c jamgram.c lists.c make.c make1.c\ - object.c option.c output.c parse.c pathsys.c pathunix.c regexp.c rules.c\ + object.c option.c output.c parse.c pathsys.c regexp.c rules.c\ scan.c search.c subst.c timestamp.c variable.c modules.c strings.c filesys.c\ builtins.c class.c cwd.c native.c md5.c w32_getreg.c modules/set.c\ modules/path.c modules/regex.c modules/property-set.c modules/sequence.c\ modules/order.c" case $BOOST_JAM_TOOLSET in mingw) - BJAM_SOURCES="${BJAM_SOURCES} execnt.c filent.c" + BJAM_SOURCES="${BJAM_SOURCES} execnt.c filent.c pathnt.c" ;; *) - BJAM_SOURCES="${BJAM_SOURCES} execunix.c fileunix.c" + BJAM_SOURCES="${BJAM_SOURCES} execunix.c fileunix.c pathunix.c" ;; esac (It took me quite some time to figure out this one.) Although pathunix.c compiles on MinGW, it doesn't work, causing the bootstrap to complain about not being able to write its command file. The correct pattern to follow (as correctly done in build.jam; you can see half of it at the bottom of the build.jam diff here) is for pathnt.c to be used for mingw and pathunix.c to be used for all other build.sh platforms (i.e. real Unixes). Thanks, Stephan T. Lavavej

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[container][set, map, flat_set, flat_map, +multi_xxx] operator< and operator== seems to ignore custom KeyCompare
by Thorsten Ottosen 18 Jul '13

18 Jul '13

Hi Ion & others, I think that there might be a problem in the implementation of operator< for these containers. There might be a problem with operator== too. The problem is that they all use some variant of the following definition: template <class Key, class Value, class KeyOfValue, class KeyCompare, class A> inline bool operator<(const rbtree<Key,Value,KeyOfValue,KeyCompare,A>& x, const rbtree<Key,Value,KeyOfValue,KeyCompare,A>& y) { return std::lexicographical_compare(x.begin(), x.end(), y.begin(), y.end()); } There is no KeyCompare (or other compare object) passsed to lexicographical compare. Reading up on the standard, it seems that all standard containers are implemented this way. Consequence: when having e.g. set<T*>, the comparison is not portable, since only std::less<T*> is guaranteed to be. So isn't this a defect? The other issue is perhaps more sensitive. What should users expect from typedef set<std::string,CaseInsensitiveLess> Set; Set s1{ "foo", "BAR" }; Set s2{ "FOO", "bar" }; assert( s1 < s2 ); // true? assert( s1 == s2 ); // true? I was at least surprised by this behavior. regards Thorsten

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Git Modularization example Boost .gitattributes
by Niall Douglas 16 Jul '13

16 Jul '13

> > Shouldn't the repositories contain a .gitattributes file indicating the > > eol flavor to be used for text files where it has significance? > > Perhaps! I don't know anything about .gitattributes. Where can I find > out more? Dave, I can probably save you some work here with my "perfect" mirror of Boost's EOL and MIME type config into a .gitattributes with which I configured my subgit to mirror my git repo into Boost sandbox. Taken from https://github.com/ned14/TripleGit/blob/master/.gitattributes: * text=auto !eol svneol=native#text/plain *.gitattributes text svneol=native#text/plain # Scriptish formats *.bat text svneol=native#text/plain *.bsh text svneol=native#text/x-beanshell *.cgi text svneol=native#text/plain *.cmd text svneol=native#text/plain *.js text svneol=native#text/javascript *.php text svneol=native#text/x-php *.pl text svneol=native#text/x-perl *.pm text svneol=native#text/x-perl *.py text svneol=native#text/x-python *.sh eol=lf svneol=LF#text/x-sh configure eol=lf svneol=LF#text/x-sh # Image formats *.bmp binary svneol=unset#image/bmp *.gif binary svneol=unset#image/gif *.ico binary svneol=unset#image/ico *.jpeg binary svneol=unset#image/jpeg *.jpg binary svneol=unset#image/jpeg *.png binary svneol=unset#image/png *.tif binary svneol=unset#image/tiff *.tiff binary svneol=unset#image/tiff *.svg text svneol=native#image/svg%2Bxml # Data formats *.pdf binary svneol=unset#application/pdf *.avi binary svneol=unset#video/avi *.doc binary svneol=unset#application/msword *.dsp text svneol=crlf#text/plain *.dsw text svneol=crlf#text/plain *.eps binary svneol=unset#application/postscript *.gz binary svneol=unset#application/gzip *.mov binary svneol=unset#video/quicktime *.mp3 binary svneol=unset#audio/mpeg *.ppt binary svneol=unset#application/vnd.ms-powerpoint *.ps binary svneol=unset#application/postscript *.psd binary svneol=unset#application/photoshop *.rdf binary svneol=unset#text/rdf *.rss text svneol=unset#text/xml *.rtf binary svneol=unset#text/rtf *.sln text svneol=native#text/plain *.swf binary svneol=unset#application/x-shockwave-flash *.tgz binary svneol=unset#application/gzip *.vcproj text svneol=native#text/xml *.vcxproj text svneol=native#text/xml *.vsprops text svneol=native#text/xml *.wav binary svneol=unset#audio/wav *.xls binary svneol=unset#application/vnd.ms-excel *.zip binary svneol=unset#application/zip # Text formats .htaccess text svneol=native#text/plain *.bbk text svneol=native#text/xml *.cmake text svneol=native#text/plain *.css text svneol=native#text/css *.dtd text svneol=native#text/xml *.htm text svneol=native#text/html *.html text svneol=native#text/html *.ini text svneol=native#text/plain *.log text svneol=native#text/plain *.mak text svneol=native#text/plain *.qbk text svneol=native#text/plain *.rst text svneol=native#text/plain *.sql text svneol=native#text/x-sql *.txt text svneol=native#text/plain *.xhtml text svneol=native#text/xhtml%2Bxml *.xml text svneol=native#text/xml *.xsd text svneol=native#text/xml *.xsl text svneol=native#text/xml *.xslt text svneol=native#text/xml *.xul text svneol=native#text/xul *.yml text svneol=native#text/plain boost-no-inspect text svneol=native#text/plain CHANGES text svneol=native#text/plain COPYING text svneol=native#text/plain INSTALL text svneol=native#text/plain Jamfile text svneol=native#text/plain Jamroot text svneol=native#text/plain Jamfile.v2 text svneol=native#text/plain Jamrules text svneol=native#text/plain Makefile* text svneol=native#text/plain README text svneol=native#text/plain TODO text svneol=native#text/plain # Code formats *.c text svneol=native#text/plain *.cpp text svneol=native#text/plain *.h text svneol=native#text/plain *.hpp text svneol=native#text/plain *.ipp text svneol=native#text/plain *.tpp text svneol=native#text/plain *.jam text svneol=native#text/plain *.java text svneol=native#text/plain Hope that's useful. Niall --- Opinions expressed here are my own and do not necessarily represent those of BlackBerry Inc.

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detail/endian.hpp replacement?
by Philip Bennefall 15 Jul '13

15 Jul '13

Hi all, I just wanted to ask about the possibility of getting the Boost licensed fix for detail/endian.hpp into the next release of Boost? It would be great to have that license ambiguity resolved for version 1.55.0. Kind regards, Philip Bennefall

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[thread] Is future.then( scheduler , task ) abandoned?
by Klaim - Joël Lamotte 15 Jul '13

15 Jul '13

On this page: http://www.boost.org/doc/libs/1_54_0/doc/html/thread/future.html And in the task list: https://svn.boost.org/trac/boost/query?status=!closed&component=thread We can see that there are plans to add async( scheduler, task ). However there are no tasks for future.then( scheduler, task ). The documentation suggests that it will be implemented in a future release. So I just wanted a confirmation: is it still planned or is it abandoned? Or is it just a missing task? Joel Lamotte

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Git Modularization hiccups
by Beman Dawes 15 Jul '13

15 Jul '13

* "git clone --recursive http://github.com/boostorg/boost modular-boost" is mostly working fine here (on Win7) but is producing one set of error messages: Cloning into 'libs/assign'... fatal: reference is not a tree: 57ec5d1534810090649b18c88e66a46f48cdcf1c ... Unable to checkout '57ec5d1534810090649b18c88e66a46f48cdcf1c' in submodule path 'libs/assign' The remaining hiccups are in the root directory, comparing trunk to master: * boost.css is missing content from revisions 36243 and 53553. * boost-build.jam has different comments and history. Something is totally whacky. * boostcpp.py contents are the same, but the trunk file has Unix line endings, the master file has Windows line endings. * Same problem with bootstrap.sh. IIRC, it is important that the .sh files have the Unix line endings. * c++boost.gif not present in trunk, present in master. * index.html missing in master. * Jamfile.v2 and Jamroot.jam not present in trunk, present in master. * INSTALL missing in master. * LICENSE_1_0.txt has Unix line endings in trunk, Windows line endings in master. * project-config.jam missing in master. * rst.cc missing in master. * README.txt not present in trunk, present in master. HTH, --Beman

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Release branch now open for merging
by Marshall Clow 15 Jul '13

15 Jul '13

The release branch (https://svn.boost.org/svn/boost/branches/release) is open for merging all stable changes from trunk, including bug fixes and major upgrades to existing libraries. Breaking changes should be coordinated via the mailing list with the developers of the other libraries affected. New libraries may be added, but require permission of a release manager. In other words, merging *does not* require permission from a release manager, except for new libraries. Boost Calendar with the release schedule: http://www.boost.org/development/index.html Release schedule explanation: http://svn.boost.org/trac/boost/wiki/ReleaseSchedule Release practices for developers: http://svn.boost.org/trac/boost/wiki/ImprovingPractices -- The Release Managers, Beman Dawes Daniel James Eric Niebler Marshall Clow Rene Rivera Vladimir Prus

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[function] type conversion ambiguity?
by Andrew Ho 15 Jul '13

15 Jul '13

Consider the overloaded functions foo and bar: typedef boost::function<void(void)> function_type1; typedef boost::function<void(int)> function_type2; typedef std::function<void(void)> function_type3; typedef std::function<void(int)> function_type4; void foo(const function_type1 &a) { // blah } void foo(const function_type2 &a) { // blah } void bar(const function_type3 &a) { // blah } void bar(const function_type4 &a) { // blah } calling foo with a function pointer is ambiguous, but calling bar is not: void doit1(void) {} void doit2(int) {} foo(&doit1); // ambiguous bar(&doit2); // compiles and runs fine This occurs despite the fact that boost::function<void(void)>(&doit2) can be caught at compile time. Is there some way to fix the definition of boost::function such that this is no longer ambiguous?

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Nullable types
by Bjorn Reese 15 Jul '13

15 Jul '13

It seems like different Boost libraries use different nullable types. * Optional uses boost::none * Tribool uses boost::logic::indeterminate_keyword_t * Tuple uses boost::tuples::null_type * Variant uses boost::blank And there are possibly more. What are your opinions about unifying these?

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Extremely large Visual Studio libboost_log_setup* binaries
by Tom Kent 14 Jul '13

14 Jul '13

In the 1.54.0 release, I noticed that the size of the binaries built with visual studio was more than twice that of the previous releases. For example the msvc-8.0-64 build went from 2GB to 5GB. Upon further investigation, almost all of that increase was in the libboost_log_setup* binaries, which were each in the 100s of MBs. Does anyone know if there is a reason for this? Is it a configuration error? Tom Kent

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Boost.Operators and make_shared
by Pieter 13 Jul '13

13 Jul '13

LS, I have noticed that using Boost.Operators has a side-effect which I can't explain. I am using std::make_shared as a default, however, some of the boost libraries I use pull in boost::make_shared as well. When using some class T2 derived from one of the boost.operators classes, this causes MSVC2010 to not compile when invoking make_shared<T2> as the compiler can no longer resolve between the two overloaded versions of make_shared for some reason. I am hoping that someone out can explain what is happening here. A minimal example is included here: #include <memory> #include <boost\operators.hpp> #include <boost\make_shared.hpp> struct T1 {}; struct T2 : boost::equality_comparable<T2> {}; int main( int argc, const char* argv[] ) { T1 Object1; T2 Object2; using std::make_shared; std::shared_ptr<T1> Ptr1 = make_shared<T1>(Object1); // OK std::shared_ptr<T2> Ptr2 = make_shared<T2>(Object2); // error C2668: 'boost::make_shared' : ambiguous call to overloaded function return 1; } Thanks in advance! Pieter

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[regression] patch for running tests in parallel and out-of-sync files
by Robert Kawulak 13 Jul '13

13 Jul '13

When I was running tests in parallel (using b2 -j option) I was getting random warnings in the results table because "msvc.manifest" lines were interleaved with compile/link actions. I've fixed this with the attached patch - is it OK to apply it to trunk/release? BTW, I've noticed that the following files in tools/regression/src haven't been updated in release branch even though they've been changed in trunk a long time ago: compiler_status.cpp (trunk date 2012-01-21, release date 2011-10-06) library_status.cpp (trunk date 2013-03-25, release date 2013-03-09) Is it OK to update these in release branch? Best regards, Robert

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[log] Set default log source name
by Renato Forti 12 Jul '13

12 Jul '13

Hi All, Have any way to define a custon log source name on simple_event_log_backend! I foud a method to get (get_default_source_name), but where is "set" method! HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\EventLog\Application\do kagent simple event source I want set/change default name (in my case) : "dokagent simple event source" Thanks

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[config] Feature request: BOOST_OVERRIDE
by Borislav Stanimirov 12 Jul '13

12 Jul '13

Hi, I think it will be a nice feature to add BOOST_OVERRIDE to Boost.Config in a manner similar to BOOST_CONSTEXPR. It's a nice keyword and it would be nice if people could make use of it when it's available. -- Borislav

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multi_index broken on gcc4.7
by Hartmut Kaiser 12 Jul '13

12 Jul '13

In code which compiled just fine until yesterday I'm now seeing: /opt/boost/trunk-release/boost/multi_index/detail/index_base.hpp: In member function 'std::pair<typename boost::multi_index::detail::multi_index_node_type<Value, IndexSpecifierList, Allocator>::type*, bool> boost::multi_index::detail::index_base<Value, IndexSpecifierList, Allocator>::final_emplace_(Args&& ...)': /opt/boost/trunk-release/boost/multi_index/detail/index_base.hpp:214:29: error: expected primary-expression before ')' token /opt/boost/trunk-release/boost/multi_index/detail/index_base.hpp: In member function 'std::pair<typename boost::multi_index::detail::multi_index_node_type<Value, IndexSpecifierList, Allocator>::type*, bool> boost::multi_index::detail::index_base<Value, IndexSpecifierList, Allocator>::final_emplace_hint_(boost::multi_index::detail::index_base<Value , IndexSpecifierList, Allocator>::final_node_type*, Args&& ...)': /opt/boost/trunk-release/boost/multi_index/detail/index_base.hpp:233:16: error: expected primary-expression before ')' token OS: Debian Unstable Kernel: Linux 3.2 GCC: 4.7 (C++11, x86-64) Boost: SVN Trunk Build Type: Release Regards Hartmut --------------- http://boost-spirit.com http://stellar.cct.lsu.edu

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[variant] Applying a portion of fixes
by Antony Polukhin 12 Jul '13

12 Jul '13

Hi, I'd like to fix this issue: https://svn.boost.org/trac/boost/ticket/8772 Apply patch for this issue: https://svn.boost.org/trac/boost/ticket/7911 And take care of this: https://svn.boost.org/trac/boost/ticket/8717 Patches and ideas for fixes are described in tickets. If there'll be no objections till next weekend I'll commit the fixes. -- Best regards, Antony Polukhin

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Boost 1.54.0 released!
by Marshall Clow 11 Jul '13

11 Jul '13

Release 1.54.0 of the Boost C++ Libraries is now available. These open-source libraries work well with the C++ Standard Library, and are usable across a broad spectrum of applications. The Boost license encourages both commercial and non-commercial use. This release contains five new libraries and numerous enhancements and bug fixes for existing libraries. New Libraries: Log: Logging library, from Andrey Semashev. TTI: Type Traits Introspection library, from Edward Diener. Type Erasure: Runtime polymorphism based on concepts. For details, including download links, see http://www.boost.org/users/news/version_1.54.0 You can also download directly from SourceForge: http://sourceforge.net/projects/boost/files/boost/1.54.0/ To install this release on your system, see http://www.boost.org/doc/libs/release/more/getting_started/index.html Thanks, --The Boost release team Beman Dawes Daniel James Eric Niebler Marshall Clow Rene Rivera Vladimir Prus

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Regression tests report page stuck
by Joaquin M Lopez Munoz 11 Jul '13

11 Jul '13

Hi, the trunk testing bot http://www.boost.org/development/tests/trunk/developer/summary.html seems to be stuck since ~1.5 days ago. Thank you, Joaquín M López Muñoz Telefónica Digital

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[gil] Portability of new code issue.
by Harg Tholan 11 Jul '13

11 Jul '13

Hi all, Christian has been working on some new features for GIL, such code works fine in Windows 7 with VS11, but it will fail to compile with GCC in Debian Wheezy. I've been trying to figure out why is this failing and possible workarounds with no success. For those with time wanting to help: 1. You will need boost-trunk. 2. I have attached the "bleeding edge" code (a pair of .hpp) as well as a test case. 3. Compile: g++ subsampled_test.cpp -o ss -lboost_unittesting_framework My Compiler Version: g++ (Debian 4.7.2-5) 4.7.2 Errors: yuv_image.hpp:234:38: error: expected primary-expression before ‘,’ token subsampled_test.cpp:28:41: required from here ../yuv_image.hpp:234:5: error: ISO C++ forbids comparison between pointer and integer Note: I have attached the code here because I had to fix some template code, adding/removing 'tyepename', as well as prevention of template parameter shadowing. As you already know, Microsoft's compiler is very 'flexible', allowing non-standard code to compile. Regards, Juan.

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[filesystem] Please take care of #8706
by Antony Polukhin 10 Jul '13

10 Jul '13

Hi, There is a ticket https://svn.boost.org/trac/boost/ticket/8706 and patch in it that fixes compilation of Boost.Filesystem under Android NDK. Tested patch under latest NDK and it works well. Fix is required to start regression tests for droid platform. -- Best regards, Antony Polukhin

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[function] Bind to std::function if supported?
by Andrew Ho 09 Jul '13

09 Jul '13

The boost::move library binds to std::move/T&&/etc. when the compiler supports such features, and only uses work-around mechanisms when the compiler lacks such support. Should we add similar support for boost::function? something like: #ifdef BOOST_FUNCTION_USE_STANDARD_LIBRARY_FUNCTION // alternative: #ifndef BOOST_NO_CXX11_HDR_FUNCTIONAL #include <functional> namespace boost { using ::std::function; } #else // whatever boost::function currently does #endif // ... something similar for boost::bind and std::bind I haven't looked at boost::atomic yet, but we could also consider similar bindings to std::atomic if the library doesn't already do so.

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[shared_array] Why not in C++11 ?
by Sid Sacek 09 Jul '13

09 Jul '13

Does anyone know why 'boost::shared_array<>' was not made part of C++11, since pretty much all the other smart pointers were? -Sid

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[context] SSE/AVX registers preservation
by Andrey Semashev 09 Jul '13

09 Jul '13

Hi, I've been looking at Boost.Context and wondering whether it preserves SSE/AVX state on context switches. From the code it doesn't look like the case - only jump_x86_64_ms_pe_masm.asm contains the code that saves some (not all) xmm registers and ymm registers are never saved. Is this intentional or the library simply doesn't support SSE/AVX? And why not use xsave/xrstor to consistently support all future extensions?

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Re: [boost] Interest in a 'Boost.property' library?
by Joe Mucchiello 08 Jul '13

08 Jul '13

Personally, I always consider properties with getters/setters an anti-pattern for OOP languages like C++. Class interfaces should include only those methods that describe logically valid actions one might take on instances of the class. The idea of properties might sometimes be appropriate. But often times, programs will see a hammer and treat everything they see after it as nails. It becomes easy to add a few more getters and setters for "the rest" of the implementation details and you lose proper encapsulation. Usually when I find a class with lots of get/set methods I find a class with very little thought used when that class was designed.

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[log] Setup Windows event log backends
by Renato Forti 08 Jul '13

08 Jul '13

Work well, on win 7/vc 11! Win 8/vc 11, don't work! mc is not detected! On Thu, Jul 4, 2013 at 11:38 PM, Renato Forti <re.tf(a)acm.org> wrote: > Hi, > I did, but don't work! I have mc, and I remove bin.v2. But boost build > don't find my mc :( > > - message-compiler : no > - compiler-supports-ssse3 : yes > - compiler-supports-avx2 : yes > - gcc visibility : no > - long double support : yes > > C:\boost_1_54_0>mc > Microsoft (R) Message Compiler Version 1.12.9200 Copyright (c) > Microsoft Corporation. All rights reserved. > > No cached! I am on Windows 8, and vc11! Thanks again! Hm, that's strange. Perhaps, a Win 8 thing? What does bin.v2/config.log say? _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost

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