http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50040
--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-08-11 14:28:39 UTC --- Author: rguenth Date: Thu Aug 11 14:28:36 2011 New Revision: 177667 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=177667 Log: 2011-08-11 Richard Guenther <rguent...@suse.de> PR middle-end/50040 * gimplify.c (gimplify_modify_expr_complex_part): Mark the load of the other piece with TREE_NO_WARNING. * tree-flow.h (warn_uninit): Adjust prototype. * tree-ssa.c (warn_uninit): Take uninitialized SSA name, the base variable and the expression that is used separately. Properly query all TREE_NO_WARNING flags. (struct walk_data): Remove. (warn_uninitialized_var): Likewise. (warn_uninitialized_vars): Do not walk gimple pieces but simply look at all SSA uses of the statement. Handle unused memory separately. * tree-ssa-uninit.c (warn_uninitialized_phi): Adjust. * g++.dg/warn/unit-1.C: Un-XFAIL. * gcc.dg/uninit-I.c: Likewise. Modified: trunk/gcc/ChangeLog trunk/gcc/gimplify.c trunk/gcc/testsuite/g++.dg/warn/unit-1.C trunk/gcc/testsuite/gcc.dg/uninit-I.c trunk/gcc/tree-flow.h trunk/gcc/tree-ssa-uninit.c trunk/gcc/tree-ssa.c
