http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59863
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is caused by checking TREE_ADDRESSABLE on the a decl which is correct
thing to do but the issue is there is no addressing taking in the code (only an
implicit one with a[i]:
/* An array that is indexed by a non-constant
cannot be stored in a register; we must be able to do
address arithmetic on its address.
Likewise an array of elements of variable size. */
