https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118572
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Created attachment 60216 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60216&action=edit Better testcase, specify the sign of char Since plain char can be unsigned, specifying the sign is required to hit the bug.