https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102245
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Here is a testcase which will hit the warning on all targets and not just ILP32 specific ones: int foo (_Bool x) { int v = 0; return (v & ~1u) | (1u & (x << 0)); }