https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111398
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |diagnostic Version|unknown |14.0 Severity|normal |enhancement --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- The C standard explicitely makes these cases valid. I agree it's probably unintended in most cases.