https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70463
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #0)
> From https://bugzilla.redhat.com/show_bug.cgi?id=1315388
>
>
> const unsigned char mask = 0xf;
>
> inline unsigned char key(const void* addr)
> { return _Hash_impl::hash(addr) & mask; }
>
> This always returns 0 when addresses are 4-byte aligned.
Bah, no it doesn't. That's what std::hash<void*> does, but not
_Hash_impl::hash.
