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Compiling smart_ptr library
by l＠lo 08 May '03

08 May '03

Hi everybody! I'm trying to compile the smart_ptr library using the Jamfile in the test directory. Some of the test *.cpp files are compiled successfully, but some of them drops the following error: sunpro-Link-action ../../../libs/smart_ptr/test/bin/shared_ptr_alloc_ test.test/sunpro/debug/runtime-link-dynamic/shared_ptr_alloc_test Undefined first referenced symbol in file boost::__RTTI__1nFboostPchecked_deleter4nBZ___ /rest/proj/users/kercsoj/boost/boost_1_30_0/libs/s mart_ptr/test/bin/shared_ptr_alloc_test.test/sunpr o/debug/runtime-link-dynamic/ SunWS_cache/CC_obj__/_iANwWXwaw2nbnjBybyL.o [Hint: static member boost::__RTTI__1nFboostPchecked_deleter4nBZ___ must be defined in the program] It's seems, it is a common error, because it appears several times in the error output of the compiler. Has anybody any ideea, why this error message comes, and how could be corrected? Thanks, lalo

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Indirect Iterator Adaptor, std::set and MSVC 6.5
by Joaquín Mª López Muñoz 08 May '03

08 May '03

The following produces an internal compiler crash in MSVC 6.5 #include <set> #include <boost/iterator_adaptors.hpp> int main() { typedef std::set<int *> type0; typedef boost::indirect_iterator_generator< type0::iterator,const int>::type type1; type0 s; type1 it(s.begin()); return 0; } This happens for std::set only, using say std::vector instead works fine. Is some workaround known? TIA Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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Regex issue under Visual Studio 2003
by Frank Schwab 08 May '03

08 May '03

I have an inherited VC++ program that I am trying to port to Microsoft Visual Studio 2003 (it compiles and runs fine in Visual Studio 6.0). I've downloaded the 1.30.0 release, and the following problem still occurs. The (exceptionally) verbose error message I receive from the compiler is: error C2664: 'bool boost::regex_match<std::char_traits<char>,std::allocator<_Ty>,Allocator,char ,boost::regex_traits<charT>,std::allocator<_Ty>>(const std::basic_string<_Elem,_Traits,_Ax> &,boost::match_results<iterator,Allocator> &,const boost::reg_expression<charT,traits,Allocator> &,unsigned int)' : cannot convert parameter 2 from 'boost::cmatch' to 'boost::match_results<iterator,Allocator> &' with [ _Ty=char, Allocator=std::allocator<char>, charT=char, _Elem=char, _Traits=std::char_traits<char>, _Ax=std::allocator<char>, iterator=std::basic_string<char,std::char_traits<char>,std::allocator<char>> ::const_iterator, traits=boost::regex_traits<char> ] and [ iterator=std::basic_string<char,std::char_traits<char>,std::allocator<char>> ::const_iterator, Allocator=std::allocator<char> ] The Code fragment I get the error on is: // lpcszDeviceName is a function parameter defined as LPCTSTR lpcszDeviceName TSTRING strName = lpcszDeviceName; boost::regex expr("IW\\s+[A-Za-z]+\\s+([0-9]+)"); boost::cmatch matches; if (boost::regex_match(strName, matches, expr)) { ... } with the error message pointing to: if (boost::regex_match(strName, matches, expr)) This may be related to a Microsoft note: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore/html /vclrfsomeiteratorsarenolongersameaspointers.asp but, then again, it may not. Anyone have any suggestions? I am well out of my depth in trying to understand the incantations here, and have a dozen spots in the code where this occurs. TIA, /frank

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call_traits and MSVC 7.1
by Randy Bowen 08 May '03

08 May '03

We have been using call_traits from Boost version 1.29.0 in conjunction with MSVC 7.0. When attempting to recompile this code under MSVC 7.1, using either Boost 1.29.0 or 1.30.0, we now encounter compilation errors. A simple example of the usage pattern is: ############################################################### #include <boost/call_traits.hpp> class A { public: template<typename _Source> void doSomething ( typename boost::call_traits<_Source>::param_type value ) { } }; class B { public: explicit B(double d = 1.0, int i = 42) : _d(d), _i(i) {} B(B const& b) : _d(b._d), _i(b._i) {} private: double _d; int _i; }; extern "C" int main(int argc, char* argv[]) { A a; B b; a.doSomething(b); return 0; } ############################################################# The new compiler generates the error message: c:\Documents and Settings\rbowen\My Documents\Projects\CallTraitsTest\CallTraitsTest.cpp(34) : error C2783: 'void A::doSomething (boost::call_traits<_Source>::param_type)' : could not deduce template argument for '_Source' c:\Documents and Settings\rbowen\My Documents\Projects\CallTraitsTest\CallTraitsTest.cpp(11) : see declaration of 'A::doSomething' As an experiment, I manually included the older logic for call_traits by cutting and pasting the relevant classes into my source from 'detail/ob_call_traits.hpp' and still encountered the same error. Has anyone else experienced this? Is this (yet another) MS compiler bug?

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Static thread library missing in 1_30_0
by yss15632 08 May '03

08 May '03

Hi, I am using boost on a linux system. I upgraded from boost_1_29_0 to 1_30_0. However, if I build the library just by typing "bjam" I cannot find the static library libboost_thread.a, in contrary to version 1_29_0. How can I generate it? Thank you very much, Stefan

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date_time link or compile problem
by Jimmy Pritts 08 May '03

08 May '03

I have boost 1.29 and gcc 3.2.2 on Linux. Here is the simple code I am trying to compile: #include <string> #include "boost/date_time/gregorian/gregorian.hpp" int main() { using namespace std; using namespace boost::gregorian; string ds("2002/1/25"); date d1(from_string(ds)); return 0; } I get the following link error: make g++ main.cc -lstdc++ -o test /tmp/ccph1inq.o(.gnu.linkonce.t._ZN5boost9date_time4dateINS_9gregorian4dateENS2_18gregorian_calendarENS0_13date_durationIlEEEC2ERKNS0_19year_month_day_baseINS2_9greg_yearENS2_10greg_monthENS2_8greg_dayEEE+0x11): In function `boost::date_time::date<boost::gregorian::date, boost::gregorian::gregorian_calendar, boost::date_time::date_duration<long> >::date[not-in-charge](boost::date_time::year_month_day_base<boost::gregorian::greg_year, boost::gregorian::greg_month, boost::gregorian::greg_day> const&)': : undefined reference to `boost::date_time::gregorian_calendar_base<boost::date_time::year_month_day_base<boost::gregorian::greg_year, boost::gregorian::greg_month, boost::gregorian::greg_day>, unsigned long>::day_number(boost::date_time::year_month_day_base<boost::gregorian::greg_year, boost::gregorian::greg_month, boost::gregorian::greg_day> const&)' collect2: ld returned 1 exit status make: *** [test] Error 1 The missing symbol does not seem to be in the static library libboost_date_time.a, so I don't think I need to link to that. Any suggestions? Thanks in advance, Jimmy.

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RE: [Boost-Users] call_traits and MSVC 7.1
by Arjun Bijanki 08 May '03

08 May '03

> From: Randy Bowen [mailto:rbowen@stamps.com] > Sent: Wednesday, May 07, 2003 5:46 PM > To: Boost-Users(a)yahoogroups.com > Subject: [Boost-Users] call_traits and MSVC 7.1 > > We have been using call_traits from Boost version 1.29.0 in > conjunction with MSVC 7.0. When attempting to recompile this code > under MSVC 7.1, using either Boost 1.29.0 or 1.30.0, we now > encounter compilation errors. A simple example of the usage pattern > is: <code snipped> This is illegal code. That it compiled in MSVC 7.0 was a bug. The template parameter '_Source' can not be deduced from the callsite of doSomething. 14.8.2.4 in the ISO/IEC 14882 lists the forms in which template parameters can be deduced, but a qualified name involving nested types is not one of them. I suspect it's because of something like this: template<typename T> struct S { typedef T type; }; template<> struct S<char> { typedef int type; }; template<typename T> void foo(typename S<T>::type); int main() { foo(3); //what is T deduced to be? } I'd guess the documentation for call_traits discusses typical usage patterns, and may help. You can also explicitly specify the template argument. Hope this helps. Arjun Bijanki Microsoft Visual C++

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ublas: identity_matrix and row()
by Alexander G Winbow 08 May '03

08 May '03

It seems that identity_matrix does not work with row(); is this supposed to be the case? For example: ----------- code excerpt ----------- #include <boost/numeric/ublas/matrix.hpp> #include <boost/numeric/ublas/vector.hpp> int main () { using namespace boost::numeric::ublas; //matrix<double> im(3,3); // this works identity_matrix<double> im(3); // this does not boost::numeric::ublas::vector<double> v = row(im,1); } ------------------------------------ Using matrix<> im, the code works fine, but using identity_matrix<> im, g++ blows up with four or five errors of the form included below, on lines 529, 61, 100, 104, and 84 of matrix_proxy.hpp. I've got quite a lot of questions on ublas, even after combing through the ublas and boost documentation, wiki, and mailing lists at great length. Is this an appropriate forum to pepper with questions, or is there some other manual I can RTFM first? Thanks, -Alex -------- errors excerpt compiling the above --------- /home/linux/phcomp/ph141w/ph141wam/libraries/boost_1_30_0/boost/numeric/ublas/matrix_proxy.hpp: In instantiation of `boost::numeric::ublas::matrix_row<boost::numeric::ublas::identity_matrix<double> >': rowtest.cpp:10: instantiated from here /home/linux/phcomp/ph141w/ph141wam/libraries/boost_1_30_0/boost/numeric/ublas/matrix_proxy.hpp:529: no type named `closure_type' in `class boost::numeric::ublas::identity_matrix<double>' /home/linux/phcomp/ph141w/ph141wam/libraries/boost_1_30_0/boost/numeric/ublas/matrix_proxy.hpp:529: template argument 3 is invalid -----------------------------------------------------------

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Why isn't the "last access time" part of the filesystem library?
by richard_fanta 07 May '03

07 May '03

Looking at the filesystem library and the attributes work in boost- sandbox, I don't immediately see "last access time" being available for a file or directory. "Last access time" was included in Dietmar Kuehl's original dir_it. Can someone kindly tell me why this was removed? It's highly useful, and part of every filesystem that I've seen. Thanks, Rick

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RegEx Split function dies.
by tfandango 07 May '03

07 May '03

Hi- I am attempting to parse email headers using the boost regex library. I would prefer that each email address in the TO field (delimited by a comma) would be placed into a vector<string>. Currently, I am able to obtain the entire to line (all the to addresses). I can use another regular expression to seperate it out but I'd rather do it all in one. However, If I try to add another more to this I get an exception: "Max regex search depth exceeded." I am assuming that this is because I've created a infinite loop. I'm not sure how to extend this expression to place every email address in the vector seperatly. Thanks here's my code snippet: char * expression_text = //Any possible leading whitespace: "^[ ]*" //The "To" field name in any case: "TO" //Any more whitespace: "[ ]*" //Then a colon: ":" //More white space potentially "[ ]*" //Everything here is an address up to "\r\n"; "([-(a)_\\.\"<>A-Za-z0-9]+),?"; //Create the expression class to use: RegEx expression(expression_text, true); //Attempt to grep the mail_buffer: int num_recv = 0; try { num_recv = expression.Split(to, mail_buffer); } catch (...){ //throw some exception } }

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