https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121526
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- EBCDIC if used at all is used mostly on s390* where -funsigned-char is the default. And not sure why such combination needs to be rejected, it is simply a not fully conforming set of options (like many others are). Don't use it if you want full conformance.