https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67363
--- Comment #13 from İsmail Dönmez <ismail at i10z dot com> --- (In reply to John David Anglin from comment #12) > Created attachment 36321 [details] > Patch > > I sent this change this morning to gcc-patches but it seems to have > disappeared. The patch declares the functions but those functions do not exist on mingw-w64, seems to be this will just fail with an undefined symbol error.