https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108225
--- Comment #4 from cqwrteur <unlvsur at live dot com> --- (In reply to cqwrteur from comment #3) > (In reply to cqwrteur from comment #2) > > Created attachment 54171 [details] > > Error message > > > > This is an example of how incorrectly discarding the support of old systems > > would randomly cause build issues. > > > > Please stop! Windows 95 support is extremely important > > > libstdc++ completely ignores __GTHREAD_HAS_COND macro which cause build > failure for gdb The entire win32 thread model is a mess. It does not support the thread model well enough while causing enormous pain. If users need threading, they can use posix and mcf. Why win32??