https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65040
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- (In reply to Marek Polacek from comment #2) > Taking. I think check_format_types needs a small tweak to look thru > NOP_EXPRs. Well, more like do some lame VR computation and not warn if the signedness doesn't really matter.