https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118722
--- Comment #5 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
(In reply to mauro russo from comment #4)
> > an ODR violation is still an undefined behavior
>
> That's interesting,
>
> I supposed this was only for the case of multiple/different definitions.
No. A simplistic example:
extern int this_does_not_exist_at_all;
int main()
{
return this_does_not_exist_at_all * 0;
}
GCC does not diagnose it and it's **not** a bug.
