https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53929
--- Comment #36 from LIU Hao <lh_mouse at 126 dot com> --- Created attachment 64406 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64406&action=edit additional patch for non-i386 mingw-w64 There's a leftover, specifically for non-i386 mingw-w64.
