https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83110
--- Comment #2 from Yichao Yu <yyc1992 at gmail dot com> --- What might be invalid about the source?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83110
--- Comment #2 from Yichao Yu <yyc1992 at gmail dot com> --- What might be invalid about the source?