[Bug c/78539] feature request: __noextension__

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78539

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>Without that, I have to resort to using two cases: one for __STRICT_ANSI__
and one without

I think you still need two.  The reason is __noextension__ will turn off
extensions even with -pedantic.  Otherwise it does not make sense.