https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53929
--- Comment #25 from LIU Hao <lh_mouse at 126 dot com> --- Created attachment 57191 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57191&action=edit Draft patch This is a draft patch, bootstrapped on {i686,x86_64}-w64-mingw32 successfully. Haven't run tests though.