id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc 9450,fstream open utf8 filename fails x86_64-w64-mingw32,spoo@…,Beman Dawes,"boost::filesystem stream classes won't open files with non-ascii filenames provided as utf-8 strings. This happens with and without imbuing a locale as specified in the boost doc page ""Default Encoding under Microsoft Windows"". My example is basically the example on that page, but with an ifstream. I compiled boost on Arch Linux using the AUR mingw-w64 packages. I reproduced the issue on Windows 7 x64, Windows 7 x64 VM, and in x64 Wine. I confirmed that the file exists and is named properly by making a parallel test program using _wopen (the file opened successfully).",Bugs,new,To Be Determined,filesystem,Boost 1.55.0,Problem,,,