[Bug c/117629] Redefinition of bool type in C23 could have better diagnostic

[segher at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117629

--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
"Since C23 "bool" is a keyword designating a type", something like that?