From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-392923-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 14682 invoked by alias); 26 May 2012 14:12:06 -0000
Received: (qmail 14670 invoked by uid 22791); 26 May 2012 14:12:04 -0000
X-SWARE-Spam-Status: No, hits=-3.5 required=5.0	tests=ALL_TRUSTED,AWL,BAYES_00
X-Spam-Check-By: sourceware.org
Received: from localhost (HELO gcc.gnu.org) (127.0.0.1)    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sat, 26 May 2012 14:11:52 +0000
From: "regehr at cs dot utah.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/53495] New: segmentation fault
Date: Sat, 26 May 2012 14:17:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: regehr at cs dot utah.edu
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Changed-Fields:
Message-ID: <bug-53495-4@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: 2012-05/txt/msg02541.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53495

             Bug #: 53495
           Summary: segmentation fault
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: regehr@cs.utah.edu
                CC: chenyang@cs.utah.edu


[regehr@dyson r59]$ current-gcc -O1 small.c -c
small.c: In function 'fn4':
small.c:14:1: internal compiler error: Segmentation fault
 }
 ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


[regehr@dyson r59]$ current-gcc -v
Using built-in specs.
COLLECT_GCC=current-gcc
COLLECT_LTO_WRAPPER=/uusoc/exports/scratch/regehr/z/compiler-install/gcc-r187906-install/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --with-libelf=/usr/local --enable-lto
--prefix=/home/regehr/z/compiler-install/gcc-r187906-install
--program-prefix=r187906- --enable-languages=c,c++
Thread model: posix
gcc version 4.8.0 20120526 (experimental) (GCC) 


[regehr@dyson r59]$ cat small.c 
int a, b, c, d, e, g;
static char
fn1 (char p1, int p2)
{
    return p1 || p2 < 0 || p2 >= 1 || 1 >> p2 ? p1 : 0;
}
static long long fn2 (int *, int);
static int fn3 ();
void
fn4 ()
{
    fn3 ();
    fn2 (&a, d);
}
long long
fn2 (int *p1, int p2)
{
    int f = -1L;
    for (; c <= 1; c++)
    {
        *p1 = 0;
        *p1 = fn1 (c, p2 ^ f);
    }
    a = 0;
    e = p2;
    return 0;
}
int
fn3 ()
{
    b = 3;
    for (; b; b--)
        c++;
    g = 0 >= c;
    return 0;
}