[Bug rtl-optimization/54365] ARM optimization bug when pointer arithmetic wraps

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54365

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-08-24 18:23:50 UTC ---
This code as far as I Know is undefined.  Pointer arithmetic overflow is
undefined and not wrapping.  Mainly because there is no way to add a positive
number to an object and get back a NULL pointer.