Re: [Boost-users] [1.49][filesystem] problem while instantiating a global bfs::path variable

Subject: Re: [Boost-users] [1.49][filesystem] problem while instantiating a global bfs::path variable
From: Fraser Hutchison (fraser.hutchison_at_[hidden])
Date: 2012-05-17 14:26:13

On 16/05/2012 15:56, Jan Boehme wrote:
> Hello,
>
> using a global path variable as in the following sample is no longer
> possible when using 1.49 under Windows:
>
> #include<iostream>
> #include<boost/filesystem.hpp>
>
> boost::filesystem::path global_path(".");
>
> int main()
> {
>      std::cout<<  global_path<<  std::endl;
>      return 0;
> }
>
> The program crashes while starting. The following backtrace was captured:
>
>>      msvcp100d.dll!std::codecvt<wchar_t,char,int>::in(int&  _State=0, const char * _First1=0x00000000002af760, const char * _Last1=0x00000000002af761, const char *&  _Mid1=0x0000000000000000, wchar_t * _First2=0x00000000002af460, wchar_t * _Last2=0x00000000002af660, wchar_t *&  _Mid2=0x0000000000000000)  Line 1521 + 0x5 bytes  C++
>>      global_path.exe!`anonymous namespace'::convert_aux(const char * from=0x00000000002af760, const char * from_end=0x00000000002af761, wchar_t * to=0x00000000002af460, wchar_t * to_end=0x00000000002af660, std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t>  >  &  target="", const std::codecvt<wchar_t,char,int>  &  cvt={...})  Line 84 + 0x5a bytes C++
>>      global_path.exe!boost::filesystem3::path_traits::convert(const char * from=0x00000000002af760, const char * from_end=0x00000000002af761, std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t>  >  &  to="", const std::codecvt<wchar_t,char,int>  &  cvt={...})  Line 167 C++
>>      global_path.exe!boost::filesystem3::path_traits::dispatch<std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t>  >  >(const std::basic_string<char,std::char_traits<char>,std::allocator<char>  >  &  c=".", std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t>  >  &  to="", const std::codecvt<wchar_t,char,int>  &  cvt={...})  Line 174 + 0x9e bytes   C++
>>      global_path.exe!boost::filesystem3::path::path<char const [2]>(const char [2]&  source=0x000000013fa435d4, void * __formal=0x0000000000000000)  Line 135 + 0x2d bytes    C++
>>      global_path.exe!`dynamic initializer for 'global_path''()  Line 4 + 0x1a bytes  C++
>>      msvcr100d.dll!_initterm(void (void)* * pfbegin=0x000000013fa433d0, void (void)* * pfend=0x000000013fa43418)  Line 873   C
>>      global_path.exe!__tmainCRTStartup()  Line 474   C
>>      global_path.exe!mainCRTStartup()  Line 371  C
>>      kernel32.dll!000000007695652d()
>>      [Frames below may be incorrect and/or missing, no symbols loaded for kernel32.dll]
>>      ntdll.dll!0000000076dec521()
> The program was built using boost 1.49 under Windows 7 and MSVC 10. The
> same sample works as expected using Boost 1.48 while keeping the rest
> untouched.
>
> Thanks for clarification,
> Jan.
>
> _______________________________________________
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> Boost-users_at_[hidden]
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This has already been reported as a bug:  
https://svn.boost.org/trac/boost/ticket/6638

All the best,
Fraser.