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RE: [Boost-Users] Warnings compiling smart_ptr_test.cpp under MSV C++ 6.0
by Mark Storer 14 Nov '02

14 Nov '02

Good ol' C4786. It warns you whenever a classes name exceeds 255 characters. Templates within templates within... exceed this quite often (as you may have noticed). Microsoft's debugger won't work properly with these classes. Pragma is your friend. Throw this code in before the #includes: #pragma warning (disable: 4786) I generally build my own include file to wrap stl and boost (often a precompiled header). This file ALWAYS disables C4786. Aren't STL compiler messages great? (that would be sarcasm) --Mark Storer Software Engineer Cardiff Software #include <disclaimer> typedef std::disclaimer<Cardiff> Discard;

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Is MTL alive?
by alexei_novakov 13 Nov '02

13 Nov '02

Does anyone know if there is any development of MTL? Where I can find the latest sources and info? What is the status of it anyways? Thank you Alexei Novakov

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Warnings compiling smart_ptr_test.cpp under MSVC++ 6.0
by fejimush 13 Nov '02

13 Nov '02

I am brand new to boost. I have been able to compile and link smart_ptr_test.cpp. I have also been able to successfully run the test without errors. Can anyone tell me why I am getting numerous warnings? (shown below) One more item, the warning takes me to c:\...\VC98\Include\UTILITY Is this a stl implentation problem? Thanks in advanced. ---------------Build Output----------------------- Compiling... smart_ptr_test.cpp c:\program files\microsoft visual studio\vc98\include\utility(25) : warning C4786: 'std::_Tree<boost::shared_ptr<int>,boost::shared_ptr<int>,std:: set<boost::shared_ptr<int>,std::less<boost::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > > ::_Kfn,std::less<boost::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::iterator' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\libs\smart_ptr\smart_ptr_test.cpp(198) : see reference to class template instantiation 'std::pair<std::_Tree<boost::shared_ptr<int>,boost::shar ed_ptr<int>,std::set<boost::shared_ptr<int>,std::less<boost::shared_pt r<int> >,std ::allocator<boost::shared_ptr<int> > >::_Kfn,std::less<boost::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::iterator,bool>' being compiled c:\program files\microsoft visual studio\vc98\include\utility(25) : warning C4786: 'std::_Tree<boost::shared_array<char>,boost::shared_array<char> ,std::set<boost::shared_array<char>,std::less<boost::shared_array<char > >,std::allocator<boost::shared_ array<char> > >::_Kfn,std::less<boost::shared_array<char> >,std::allocator<boost::shared_array<char> > >::iterator' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\libs\smart_ptr\smart_ptr_test.cpp(242) : see reference to class template instantiation 'std::pair<std::_Tree<boost::shared_array<char>,boost::s hared_array<char>,std::set<boost::shared_array<char>,std::less<boost:: shared_array <char> >,std::allocator<boost::shared_array<char> > >::_Kfn,std::less<boost::shared_array<char> >,std::allocator<boost::shared_array<char> > >::iterator,bool>' being compiled c:\program files\microsoft visual studio\vc98\include\utility(21) : warning C4786: 'std::pair<std::_Tree<boost::shared_ptr<int>,boost::shared_ptr< int>,std::set<boost::shared_ptr<int>,std::less<boost::shared_ptr<int> >,std::allocator<boost::shared_pt r<int> > >::_Kfn,std::less<boost::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::iterator,bool>::pair<std::_Tree<boost::shared_ptr<int>,boost::share d_ptr<int>,std::set<boost::shared_ptr<int>,std::less<boost::shared_ptr <int> >,std::allo cator<boost::shared_ptr<int> > >::_Kfn,std::less<boost::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::iterator,bool>' : identifier was truncated to '255' characters in the debug information c:\program files\microsoft visual studio\vc98\include\utility(21) : warning C4786: 'std::pair<std::_Tree<boost::shared_array<char>,boost::shared_a rray<char>,std::set<boost::shared_array<char>,std::less<boost::shared_ array<char> >,std::allocator<boos t::shared_array<char> > >::_Kfn,std::less<boost::shared_array<char> >,std::allocator<boost::shared_array<char> > >::iterator,bool>::pair<std::_Tree<boost::shared_array<char>,boost::sh ared_array<char>,std::set<boost::shared_array<char>,std::less<boos t::shared_array<char> >,std::allocator<boost::shared_array<char> > >::_Kfn,std::less<boost::shared_array<char> >,std::allocator<boost::shared_array<char> > >::iterator,bool>' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\boost\checked_delete.hpp(28) : warning C4786: 'std::_Tree<boost::shared_array<char>,boost::shared_array<char> ,std::set<boost::shared_array<char>,std::less<boost::shared_array<char > >,std::allocator<boost::shared_array<char> > >::_Kfn ,std::less<boost::shared_array<char> >,std::allocator<boost::shared_array<char> > >::_Nil' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\boost\checked_delete.hpp(28) : warning C4786: 'std::_Tree<boost::shared_array<char>,boost::shared_array<char> ,std::set<boost::shared_array<char>,std::less<boost::shared_array<char > >,std::allocator<boost::shared_array<char> > >::_Kfn ,std::less<boost::shared_array<char> >,std::allocator<boost::shared_array<char> > >::_Nilrefs' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\boost\checked_delete.hpp(28) : warning C4786: 'std::_Tree<boost::shared_ptr<int>,boost::shared_ptr<int>,std:: set<boost::shared_ptr<int>,std::less<boost::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::_Kfn,std::less<boos t::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::_Nilrefs' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\boost\checked_delete.hpp(28) : warning C4786: 'std::_Tree<boost::shared_array<char>,boost::shared_array<char> ,std::set<boost::shared_array<char>,std::less<boost::shared_array<char > >,std::allocator<boost::shared_array<char> > >::_Kfn ,std::less<boost::shared_array<char> >,std::allocator<boost::shared_array<char> > >' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\boost\checked_delete.hpp(28) : warning C4786: 'std::_Tree<boost::shared_array<char>,boost::shared_array<char> ,std::set<boost::shared_array<char>,std::less<boost::shared_array<char > >,std::allocator<boost::shared_array<char> > >::_Kfn ,std::less<boost::shared_array<char> >,std::allocator<boost::shared_array<char> > >::const_iterator' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\boost\checked_delete.hpp(28) : warning C4786: 'std::_Tree<boost::shared_array<char>,boost::shared_array<char> ,std::set<boost::shared_array<char>,std::less<boost::shared_array<char > >,std::allocator<boost::shared_array<char> > >::_Kfn ,std::less<boost::shared_array<char> >,std::allocator<boost::shared_array<char> > >::iterator' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\boost\checked_delete.hpp(28) : warning C4786: 'std::_Tree<boost::shared_array<char>,boost::shared_array<char> ,std::set<boost::shared_array<char>,std::less<boost::shared_array<char > >,std::allocator<boost::shared_array<char> > >::_Kfn ,std::less<boost::shared_array<char> >,std::allocator<boost::shared_array<char> > >::_Node' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\boost\checked_delete.hpp(28) : warning C4786: 'std::_Tree<boost::shared_array<char>,boost::shared_array<char> ,std::set<boost::shared_array<char>,std::less<boost::shared_array<char > >,std::allocator<boost::shared_array<char> > >::_Kfn ,std::less<boost::shared_array<char> >,std::allocator<boost::shared_array<char> > >::_Redbl' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\boost\checked_delete.hpp(28) : warning C4786: 'std::_Tree<boost::shared_ptr<int>,boost::shared_ptr<int>,std:: set<boost::shared_ptr<int>,std::less<boost::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::_Kfn,std::less<boos t::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::const_iterator' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\boost\checked_delete.hpp(28) : warning C4786: 'std::_Tree<boost::shared_ptr<int>,boost::shared_ptr<int>,std:: set<boost::shared_ptr<int>,std::less<boost::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::_Kfn,std::less<boos t::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::iterator' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\boost\checked_delete.hpp(28) : warning C4786: 'std::_Tree<boost::shared_ptr<int>,boost::shared_ptr<int>,std:: set<boost::shared_ptr<int>,std::less<boost::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::_Kfn,std::less<boos t::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::_Redbl' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\boost\checked_delete.hpp(28) : warning C4786: 'std::pair<std::_Tree<boost::shared_ptr<int>,boost::shared_ptr< int>,std::set<boost::shared_ptr<int>,std::less<boost::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::_Kfn,std: :less<boost::shared_ptr<int> >,std::allocator<boost::shared_ptr<int> > >::iterator,bool>' : identifier was truncated to '255' characters in the debug information c:\boost_1_29_0\boost\checked_delete.hpp(28) : warning C4786: 'std::pair<std::_Tree<boost::shared_array<char>,boost::shared_a rray<char>,std::set<boost::shared_array<char>,std::less<boost::shared_ array<char> >,std::allocator<boost::shared_array<char> > >::_Kfn,std::less<boost::shared_array<char> >,std::allocator<boost::shared_array<char> > >::iterator,bool>' : identifier was truncated to '255' characters in the debug information Linking... GRPostOffice.exe - 0 error(s), 17 warning(s)

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Boost on OS X
by boxerab 13 Nov '02

13 Nov '02

Dear Boost Users, I have been using boost on windows 2000, and I am now trying to move some code over to OS X. I have a PowerPlant application, and I want to use the regex library. Do I have to configure the codewarrior command line tools, or can I use gcc. Gcc seems to be the default compiler if I just issue the "bjam" command. I need to build a target that will link with CodeWarrior. Thanks in advance. Aaron Boxer boxerab(a)NOSPAMyahoo.com

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RE: [Boost-Users] A strange question-)
by Aleksey Gurtovoy 13 Nov '02

13 Nov '02

Sam Gentile wrote: > I went there and indeed it can't get any simpler - at least > in theory-) > Read the document > C:\Boost\boost_1_29_0\libs\type_traits\c++_type_traits.htm > and its quite > simple: > > template <typename T> > struct is_void > { static const bool value = false; }; > > template <> > struct is_void<void> > { static const bool value = true; }; > > That's exactly what I want to show. So I go to the header files and > instead: > > //* is a type T void - is_void<T> > > BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_void,T,false) > > BOOST_TT_AUX_BOOL_TRAIT_SPEC1(is_void,void,true) > > > > Huh? So I look in bool_trait_def.hpp: > > #define BOOST_TT_AUX_BOOL_TRAIT_DEF1(trait,T,C) \ > > template< typename T > struct trait \ > > : mpl::bool_c< C > \ > > { \ > > BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \ > > BOOST_MPL_AUX_LAMBDA_SUPPORT(1,trait,(T)) \ > > }; \ Well, the original code doesn't have all these excessive newlines ;), but yes, basically that's how it's implemented. > Argh! Why is it done like this? This makes it much more > complicated and unreadable than it has to be. Why are macros > being used everywhere? Practical engineering matters. If you consider that the fact that there are ~60 trait templates in the library and every time when a new version of a compiler comes out, or when somebody starts porting the library to a new platform, there is a chance that you need to change half of those definitions, from, for instance, template <typename T> struct is_void : mpl::bool_c<false> { }; to template <typename T> struct is_void { BOOST_STATIC_CONSTANT(bool, value = false); typedef mpl::bool_c<value> type; }; it might all make sense, after all :). Something along the lines of both of the above scenarios has actually happened, a couple of times. It's not the whole picture yet, but IMO it's enough of the motivation already, so I won't go too deep into details :). Hope this answers your question, Aleksey

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1.29.1 release timeframe?
by Johan Nilsson 13 Nov '02

13 Nov '02

As the topic says. I do realize that there can be no absolute dates specified, I'd just like to get a hint on whether it's something within the matter of weeks, months or whatever. Thanks // Johan

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RE: [Boost-Users] Q: Boost Python / weave / swig
by Aleksey Gurtovoy 13 Nov '02

13 Nov '02

Claudius Schnörr wrote: > I would like to build a python-interface for a C++-template library I > wrote. > > After looking around a bit, besides Boost-python I found swig > and weave, which seem to have a similar purpose in mind!?! > > I would appreciate it if someone could provide some comparing > hints/links/information about these various solutions (I'm new to all > these packages). > How do they differ in terms of > - the learning curve, > - their capabilities and > - their foci ? > Have you seen this one - http://www.boost.org/libs/python/doc/comparisons.html? It's more than 1 year old, though, so things might have changed since then. In general, it's better to ask Boost.Python-related questions here - http://mail.python.org/mailman/listinfo/c++-sig. For one, you are much likely to get a quicker response :). Aleksey

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Can not gunzip bjam.exe.gz
by Mike Wilson 13 Nov '02

13 Nov '02

Hi, In Cygwin (version 2.125.2.10) I've tried to $ gunzip bjam.exe but get gunzip: bjam.exe.gz: not in gzip format (downloaded http://boost.sourceforge.net/jam-executables/bin.cygwinx86/bjam.exe.gz which was 143,050 bytes in size (x3 tries) ) My WinZip (V8.1) can't read it either. In fact I can't seem to read several of the .gz files that can be downloaded (but I did manage the Windows .zip version). Can anybody give me a clue as to what is wrong ? Mike Wilson

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Erasing an element in shared_ptr
by cadiolis 12 Nov '02

12 Nov '02

I know that the destructor of shared_ptr will call delete for its contents, but what about erasing a member using the standard erase() function in vector?

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RE: [Boost-Users] set thread priority
by Mark Storer 12 Nov '02

12 Nov '02

I'd think a relatively simple implementation would be to simply support them when possible, and otherwise turn all such calls into no-ops. Coming up with a range of priority values that would be portable shouldn't be too terribly difficult either. --Mark Storer Software Engineer Cardiff Software #include <disclaimer> typedef std::disclaimer<Cardiff> Discard;

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