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From: "regehr at cs dot utah.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/53411] New: segfault
Date: Fri, 18 May 2012 22:03:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53411

             Bug #: 53411
           Summary: segfault
    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 r49]$ current-gcc -v
Using built-in specs.
COLLECT_GCC=current-gcc
COLLECT_LTO_WRAPPER=/uusoc/exports/scratch/regehr/z/compiler-install/gcc-r187663-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-r187663-install
--program-prefix=r187663- --enable-languages=c,c++
Thread model: posix
gcc version 4.8.0 20120518 (experimental) (GCC) 


[regehr@dyson r49]$ current-gcc -O3 small.c -c
small.c: In function 'fn4':
small.c:28:1: 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 r49]$ cat small.c  
int a, b, c, d, e, f, g, h;
void fn1 ();
int fn2 ();
int
fn3 (p1)
{
    return a ? 0 : p1;
}
void
fn4 (char p1)
{
    int i, j, k;
    for (; e; e++)
        if (fn2 ())
        {
            f = 1;
            k = 0;
            for (; k <= 1; k++)
            {
                j = ~p1;
                i = f * j;
                h = (fn3 (i | 0 <= c ^ 9L) != b | d) & 8;
                g = p1 | 1;
                fn1 ();
            }
        }
    c = p1;
}