2010-04-27 Martin Jambor <mjambor@suse.cz>

2010-04-27  Martin Jambor  <mjambor@suse.cz>

	PR middle-end/43812
	* ipa.c (dissolve_same_comdat_group_list): New function.
	(function_and_variable_visibility): Call
	dissolve_same_comdat_group_list when comdat group contains external or
	newly local nodes.
	* cgraphunit.c (verify_cgraph_node): Verify that same_comdat_group
	lists are circular and that they contain only DECL_ONE_ONLY nodes.

	* testsuite/g++.dg/ipa/pr43812.C: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@158777 138bc75d-0d04-0410-961f-82ee72b054a4