https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118268
--- Comment #12 from LIU Hao <lh_mouse at 126 dot com> --- (In reply to Antoni from comment #11) > Oh, I didn't try with bc, I only tried with this code: > > void byte() {} > > The error is the same as without this patch: > > /tmp/ccX2cpcq.s: Error: .size expression for byte does not evaluate to a > constant looks like GCC doesn't emit a `.size` directive for *-x64-mingw32..