https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65534
--- Comment #2 from Bernhard Reutner-Fischer <aldot at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #1)
> > #ifndef OPTIMIZE_MANUALLY
> > void setutent(void) {
> > ((void)0);
> > __setutent_unlocked();
> > ((void)0);
> > }
> > #else
> > extern __typeof (__setutent_unlocked) setutent
> > __attribute__ ((alias ("__setutent_unlocked")));
> > #endif
>
> I do not think GCC can safely optimize this, becuase in the first
> case &setutent != &__setutent_unlocked, wile in the optimized
> case the addresses are equal.
Note that __setutent_unlocked is static, so i don't see how this specific case
would prevent optimization?
