https://gcc.gnu.org/bugzilla/show_bug.cgi?id=21161
--- Comment #25 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Peter Bergner from comment #14) For the testcase in comment #14, we don't get a warning since GCC 7 but the original testcase we still get a warning on the trunk. I have not looked into why though.