2013-11-05  Marc Glisse  <marc.glisse@inria.fr>

	PR tree-optimization/58958
gcc/
	* tree-ssa-alias.c (ao_ref_init_from_ptr_and_size): Use
	get_addr_base_and_unit_offset instead of get_ref_base_and_extent.

gcc/testsuite/
	* gcc.dg/tree-ssa/pr58958.c: New file.

From-SVN: r204389