https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94182
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Considering it is documented in another place where char is signed or unsigned. I don't know if this needs to change. https://gcc.gnu.org/onlinedocs/gcc-9.3.0/gcc/Characters-implementation.html#Characters-implementation Which of signed char or unsigned char has the same range, representation, and behavior as “plain” char (C90 6.1.2.5, C90 6.2.1.1, C99 and C11 6.2.5, C99 and C11 6.3.1.1). Determined by ABI. The options -funsigned-char and -fsigned-char change the default. See Options Controlling C Dialect. ----- CUT ----- Plus -funsigned-char/-fsigned-char
