[Bug c/85310] optimization ignoring strlen() results

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85310

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

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

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
If they want to optimize based on the size of the array then disable the
builtin (and don't use The __builtin_ specific function).

Basically this code is undefined and can do anything.  If anything maybe
strnlen should be used instead...