http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59807
--- Comment #7 from Andrey H. <ahanins at gmail dot com> --- Kai, so what would be the fix? IMHO, this bug is quite a show stopper for C++11 threading in Mingw-w64, so maybe it worth to create a temporary patch for Mingw-w64 compilation with pthreads support just to have a working toolchain?