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

Subject: [Boost-users] [1.49][filesystem] problem while instantiating a global bfs::path variable
From: Jan Boehme (jan.boehme_at_[hidden])
Date: 2012-05-16 10:56:50

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.