re PR middle-end/59338 (error: position plus size exceeds size of referenced object in BIT_FIELD_REF)

2013-11-29  Richard Biener  <rguenther@suse.de>

	PR middle-end/59338
	* tree-cfg.c (verify_expr): Restrict bounds verification of
	BIT_FIELD_REF arguments to non-aggregate typed base objects.

	* gcc.dg/torture/pr59338.c: New testcase.

From-SVN: r205521