[Bug tree-optimization/49413] over-optimization that causes valid code to segfault

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49413

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-06-15 01:13:14 UTC ---
The problem is:
  double *v = (qp == &(t->q)) ? t->xyz->va : t->xyz->vb;

the pointer v is a pointer to a 8 byte aligned data but you supply it with
something which is only 4 byte aligned.