[Bug c/88645] Don't assume functions are always nonnull if there's __attribute__((weak_import)), similar to __attribute__((weak))

[mcccs at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88645

MCCCS <mcccs at gmx dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from MCCCS <mcccs at gmx dot com> ---
*it works. This bug seemed to exit because of
a missing weak_import in Apple's headers.