https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53769
--- Comment #18 from Florian Weimer <fw at gcc dot gnu.org> --- (In reply to Vincent Lefèvre from comment #17) > (In reply to Jonathan Wakely from comment #16) > > As explained above, this is not something that can be fixed in GCC. > > I'm wondering why this bug was marked as FIXED, then. This is misleading. Providing <threads.h> or not is a compiler decision, not a library decision, so that's clearly out of scope for GCC. __STDC_NO_THREADS__ is right on the fence, though.