Will segfault if running under older Mingw32/libgomp that doesn't support TLS.
Will segfault if running under older Mingw32/libgomp that doesn't support TLS.

grumpycoders/pthreads-win32,grumpycoders/pthreads-win32,grumpycoders/pthreads-win32,grumpycoders/pthreads-win32