2012-01-03  Richard Guenther  <rguenther@suse.de>

	PR debug/51650
	* dwarf2out.c (dwarf2out_finish): Always create a DIE for
	the context of a limbo DIE when it does not already exist.

	* g++.dg/lto/pr51650-3_0.C: New testcase.

From-SVN: r182835