id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
6320,race condition in boost::filesystem::path leads to crash when used in multithreaded programs,aris.basic@…,Beman Dawes,"following app crashes on VC10 (Windows 7) (multibyte and Unicode builds)
at point of creation of path (im working around the issue by
doing dummy string to wstring conversion)
[
 wstring r; std::copy(s.begin(),s.end(),r.begin()); 
]

{{{
#!c++
#include <boost/thread.hpp>
#include <boost/filesystem.hpp>


int main(void)
{
	std::string sPath(""c:\\Development"");
	
	boost::thread_group tg;

	for(int i = 0; i < 2; i++)
	{
		tg.create_thread([&sPath](){
			boost::this_thread::sleep(boost::posix_time::milliseconds(10));
			boost::filesystem::path p(sPath);

			boost::filesystem::directory_iterator di(p), end;
			while(di != end)
				std::cout << (*(di++)).path().string() << std::endl;
		});
	}

	tg.join_all();

	int a;
	std::cin >> a;

}
}}}
VC10 CallStack:
{{{
>	msvcp100d.dll!std::codecvt<wchar_t,char,int>::in(int & _State, const char * _First1, const char * _Last1, const char * & _Mid1, wchar_t * _First2, wchar_t * _Last2, wchar_t * & _Mid2)  Line 1521 + 0x1f bytes	C++
 	filesystem_crash.exe!`anonymous namespace'::convert_aux(const char * from, const char * from_end, wchar_t * to, wchar_t * to_end, 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 + 0x25 bytes	C++
 	filesystem_crash.exe!boost::filesystem3::path_traits::convert(const char * from, const char * from_end, std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> > & to, const std::codecvt<wchar_t,char,int> & cvt)  Line 165 + 0x20 bytes	C++
 	filesystem_crash.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 + 0x7e bytes	C++
 	filesystem_crash.exe!boost::filesystem3::path::path<std::basic_string<char,std::char_traits<char>,std::allocator<char> > >(const std::basic_string<char,std::char_traits<char>,std::allocator<char> > & source, void * __formal)  Line 135 + 0x13 bytes	C++
 	filesystem_crash.exe!`anonymous namespace'::<lambda0>::operator()()  Line 15 + 0x10 bytes	C++
 	filesystem_crash.exe!boost::detail::thread_data<`anonymous namespace'::<lambda0> >::run()  Line 62	C++
 	filesystem_crash.exe!boost::`anonymous namespace'::thread_start_function(void * param)  Line 177	C++
 	msvcr100d.dll!_callthreadstartex()  Line 314 + 0xf bytes	C
 	msvcr100d.dll!_threadstartex(void * ptd)  Line 297	C
}}}
",Bugs,reopened,To Be Determined,filesystem,Boost 1.64.0,Showstopper,,,raad@… daniel.kruegler@…