https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96399
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
s390x defaults to -funsigned-char, while x86_64 defaults to -fsigned-char, so
what you get is exactly what should happen. If you want portable code, you
should use signed char or unsigned char and use char only if you don't care if
it is signed or unsigned.