vector<string> ? | GameDev.net

        

#include "stdafx.h"


#include <vector>


#include <string>



using namespace std;

int main(int argc, char* argv[]) {

	vector<string>	x;

	return 0;
}

This tiny code forces MS VC6.0 to generate this warning list: --------------------Configuration: p1 - Win32 Debug-------------------- Compiling... p1.cpp c:\program files\microsoft visual studio\vc98\include\vector(48) : warning C4786: '??0?$vector@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V?$allocator@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@2@@std@@QAE@IABV ?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@1@ABV?$allocator@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@1@@Z' : identifier was truncated to '255' characters in the browser information p:\test\p1\p1.cpp(12) : see reference to class template instantiation 'std::vector,class std::allocator >,class std::allocator,class std::allocator > > >' being compiled c:\program files\microsoft visual studio\vc98\include\vector(61) : warning C4786: '??0?$vector@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V?$allocator@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@2@@std@@QAE@PBV? $basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@1@0ABV?$allocator@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@1@@Z' : identifier was truncated to '255' characters in the browser information p:\test\p1\p1.cpp(12) : see reference to class template instantiation 'std::vector,class std::allocator >,class std::allocator,class std::allocator > > >' being compiled c:\program files\microsoft visual studio\vc98\include\vector(103) : warning C4786: '?rbegin@?$vector@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V?$allocator@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@2@@std@@QA E?AV?$reverse_iterator@PAV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V12@AAV12@PAV12@H@2@XZ' : identifier was truncated to '255' characters in the browser information p:\test\p1\p1.cpp(12) : see reference to class template instantiation 'std::vector,class std::allocator >,class std::allocator,class std::allocator > > >' being compiled c:\program files\microsoft visual studio\vc98\include\vector(105) : warning C4786: '?rbegin@?$vector@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V?$allocator@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@2@@std@@QB E?AV?$reverse_iterator@PBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V12@ABV12@PBV12@H@2@XZ' : identifier was truncated to '255' characters in the browser information p:\test\p1\p1.cpp(12) : see reference to class template instantiation 'std::vector,class std::allocator >,class std::allocator,class std::allocator > > >' being compiled c:\program files\microsoft visual studio\vc98\include\vector(107) : warning C4786: '?rend@?$vector@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V?$allocator@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@2@@std@@QAE? AV?$reverse_iterator@PAV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V12@AAV12@PAV12@H@2@XZ' : identifier was truncated to '255' characters in the browser information p:\test\p1\p1.cpp(12) : see reference to class template instantiation 'std::vector,class std::allocator >,class std::allocator,class std::allocator > > >' being compiled c:\program files\microsoft visual studio\vc98\include\vector(108) : warning C4786: '?rend@?$vector@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V?$allocator@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@2@@std@@QBE? AV?$reverse_iterator@PBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V12@ABV12@PBV12@H@2@XZ' : identifier was truncated to '255' characters in the browser information p:\test\p1\p1.cpp(12) : see reference to class template instantiation 'std::vector,class std::allocator >,class std::allocator,class std::allocator > > >' being compiled p:\test\p1\p1.cpp(15) : warning C4786: 'std::reverse_iterator,std::allocator > const *,std::basic_string,std::allocator >,std::basic_string,std::allocator > const &,std::basic_string,std::allocator > const *,int>' : identifier was truncated to '255' characters in the debug information p:\test\p1\p1.cpp(15) : warning C4786: 'std::reverse_iterator,std::allocator > *,std::basic_string,std::allocator >,std::basic_string,s td::allocator > &,std::basic_string,std::allocator > *,int>' : identifier was truncated to '255' characters in the debug information c:\program files\microsoft visual studio\vc98\include\vector(39) : warning C4786: 'std::vector,std::allocator >,std::allocator,std::allocator > > >::vector,std::allocator >,std::allocator,std::allocator > > >' : identifier was truncated to '255' characters in the debug information c:\program files\microsoft visual studio\vc98\include\vector(60) : warning C4786: 'std::vector,std::allocator >,std::allocator,std::allocator > > >::~vector,std::allocator >,std::allocator,std::allocator > > >' : identifier was truncated to '255' characters in the debug information Linking... Creating browse info file... p1.exe - 0 error(s), 10 warning(s) IS this normal? What to do to avoid that? Ropi [edited by - xropi on November 7, 2002 10:03:49 PM]

quote:
Original post by Premandrake
That warning is actually applicable to msvc as the linker only uses 255 characters to determine uniqueness.

s/linker/debugger

quote:
However, in practice it is completely useless and especially for STL as you have shown.

No, it''s not useless. You just haven''t discovered a use for it (yet). The MSVC 6 debugger has notoriously poor support for STL data structures, particularly sequential containers; it''s hard to view their elements or access their members (in the Watch window, for example), which results in developers using hacks like v._Front[6] to view the 7th element of a std::vector.

There was a CUJ article on stripping excess information (ie, compacting the type declaration) for STL entities in the MSVC 6 debugger, making it easier to decypher which types are giving problems ("std::string" vs "std::basic_string<char, charT, Allocator<char> >" and so forth).

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