https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77513
--- Comment #14 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #13)
> An intereting case from PR 103347 where the pedwarn about the NSDMI is
> suppressed because GCC thinks the initializer is in a system header:
>
> #include <cstddef>
> struct test {
> void *x = NULL; //invalid in C++03 mode
> };
> int main() {}
>
> This should be rejected with -pedantic-errors, but g++ is silent unless you
> also add -Wsystem-headers.
And this is a regression, because 4.8 silently accepts this code in C++98 mode,
whereas 4.7 warns about it as expected:
null.C:3:15: warning: non-static data member initializers only available with
-std=c++11 or -std=gnu++11 [enabled by default]
