[Bug c/53495] New: segmentation fault

[regehr at cs dot utah.edu]

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: unassig...@gcc.gnu.org
        ReportedBy: reg...@cs.utah.edu
                CC: cheny...@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;
}