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[Bug middle-end/65686] [5/6/7 regression] inconsistent warning maybe-uninitialized: warn about 'unsigned', not warn about 'int'
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 29 Apr 2016 08:37:21 +0000
- Subject: [Bug middle-end/65686] [5/6/7 regression] inconsistent warning maybe-uninitialized: warn about 'unsigned', not warn about 'int'
- Auto-submitted: auto-generated
- References: <bug-65686-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65686
--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Apr 29 08:36:49 2016
New Revision: 235622
URL: https://gcc.gnu.org/viewcvs?rev=235622&root=gcc&view=rev
Log:
2016-04-29 Richard Biener <rguenther@suse.de>
PR tree-optimization/13962
PR tree-optimization/65686
* tree-ssa-alias.h (ptrs_compare_unequal): Declare.
* tree-ssa-alias.c (ptrs_compare_unequal): New function
using PTA to compare pointers.
* match.pd: Add pattern for pointer equality compare simplification
using ptrs_compare_unequal.
* gcc.dg/uninit-pr65686.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/uninit-pr65686.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/match.pd
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-alias.c
trunk/gcc/tree-ssa-alias.h