2011-03-11  Richard Guenther  <rguenther@suse.de>

	PR lto/48073
	* tree.c (find_decls_types_r): Do not walk types only reachable
	from IDENTIFIER_NODEs.

	* g++.dg/lto/20110311-1_0.C: New testcase.

From-SVN: r170875