re PR lto/44889 (Bogus "type of ‘nsLayoutModule_NSModule’ does not match original declaration" waning compiling Mozilla)

2010-07-10  Richard Guenther  <rguenther@suse.de>

	PR lto/44889
	* gimple.c (gimple_fixup_complete_and_incomplete_subtype_p): New
	helper function.
	(gimple_types_compatible_p): Similar to pointed-to
	types allow and merge a mix of complete and incomplete aggregate.
	Use gimple_fixup_complete_and_incomplete_subtype_p for that.
	(iterative_hash_gimple_type): Adjust for that.

	* gcc.dg/lto/20100709-1_0.c: New testcase.
	* gcc.dg/lto/20100709-1_1.c: Likewise.

From-SVN: r162032