https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65716
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED CC| |jakub at gcc dot gnu.org Resolution|--- |INVALID --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Why do you think that is a bug? AFAIK ARM is one of the many targets where char is unsigned by default, while i?86/x86_64 is one of the many targets where char is signed. Use signed char explicitly if you rely on signed chars.