re PR middle-end/38851 (Compiler warns about uninitialized variable that is an object with a constructor)

2009-01-26  Richard Guenther  <rguenther@suse.de>

	PR middle-end/38851
	* Makefile.in (tree-ssa-dse.o): Add langhooks.h.
	* tree-ssa-dse.c: Include langhooks.h
	(execute_simple_dse): Remove stores with zero size.

	* g++.dg/warn/Wuninitialized-1.C: New testcase.

From-SVN: r143672