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

[jakub at gcc dot gnu.org]

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

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-08-30 13:45:13 UTC ---
This is not surprising, just use integer arithmetic instead of pointer
arithmetic.  Pointer arithmetic not only has undefined wrapping, it is defined
only within the bounds of the object it points into (or one past the last byte
in it, but you can't dereference it in that case).