From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-409466-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 23819 invoked by alias); 11 Dec 2012 10:06:47 -0000
Received: (qmail 23689 invoked by uid 55); 11 Dec 2012 10:06:23 -0000
From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/55079] [4.8 regression] false positive -Warray-bounds (also seen at -O3 bootstrap)
Date: Tue, 11 Dec 2012 10:06:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: rguenth at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Priority: P1
X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 4.8.0
X-Bugzilla-Changed-Fields:
Message-ID: <bug-55079-4-ztyupNlgV3@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-55079-4@http.gcc.gnu.org/bugzilla/>
References: <bug-55079-4@http.gcc.gnu.org/bugzilla/>
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
Content-Type: text/plain; charset="UTF-8"
MIME-Version: 1.0
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2012-12/txt/msg01074.txt.bz2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55079

--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-11 10:06:20 UTC ---
Author: rguenth
Date: Tue Dec 11 10:06:15 2012
New Revision: 194388

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194388
Log:
2012-12-11  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/55079
    * tree-vrp.c (extract_range_from_binary_expr_1): Handle MAX/MIN_EXPR
    for more cases.
    (register_edge_assert_for_2): Register asserts for post-in/decrement
    tests.
    (check_array_ref): Dump what expression we emit array bound
    warnings for.
    (search_for_addr_array): Likewise.

    * gcc.dg/Warray-bounds-9.c: New testcase.
    * gcc.dg/Warray-bounds-10.c: Likewise.
    * gcc.dg/tree-ssa/ssa-pre-1.c: Adjust.

Added:
    trunk/gcc/testsuite/gcc.dg/Warray-bounds-10.c
    trunk/gcc/testsuite/gcc.dg/Warray-bounds-9.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c