[Bug tree-optimization/33576] New: segfault in extract_muldiv for cpu2006 benchmark

["pthaugen at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

The following trimmed testcase from 464.h264ref is segfaulting.

int a1[6][4][4];
short b1[16];

int c1;
void CalculateQuantParam(void)
{
  int i, j, k, temp;

   for(k=0; k<6; k++)
      for(j=0; j<4; j++)
        for(i=0; i<4; i++)
        {
          temp = (i<<2)+j;
          a1[k][j][i]  = c1/b1[temp];
        }
}


$ /home/pthaugen/install/gcc/trunk/bin/gcc -c -m32 -O2 -ftree-loop-linear
junk.c
junk.c: In function #CalculateQuantParam#:
junk.c:6: internal compiler error: Segmentation fault
Please submit a full bug report,


Program received signal SIGSEGV, Segmentation fault.
extract_muldiv (t=0xf6efa1c0, c=0xf7de0f60, code=MULT_EXPR,
wide_type=0xf6e60150, 
    strict_overflow_p=0xffaaee08 "")
    at /home/pthaugen/src/gcc/trunk/gcc/gcc/fold-const.c:6008
6008                                       > GET_MODE_SIZE (TYPE_MODE (type)))
(gdb) bt 10
#0  extract_muldiv (t=0xf6efa1c0, c=0xf7de0f60, code=MULT_EXPR,
wide_type=0xf6e60150, 
    strict_overflow_p=0xffaaee08 "")
    at /home/pthaugen/src/gcc/trunk/gcc/gcc/fold-const.c:6008
#1  0x42084484 in ?? ()
#2  0x10212c6c in extract_muldiv (t=<value optimized out>, c=0xf7de0f60, 
    code=MULT_EXPR, wide_type=0xf6e60460, strict_overflow_p=0xffaaeee0 "")
    at /home/pthaugen/src/gcc/trunk/gcc/gcc/fold-const.c:6150
#3  0x22084442 in ?? ()
#4  0x10212f58 in extract_muldiv (t=0xf6f2adc0, c=0xf7de0480, code=MULT_EXPR, 
    wide_type=0xf6e60150, strict_overflow_p=0xffaaeee0 "")
    at /home/pthaugen/src/gcc/trunk/gcc/gcc/fold-const.c:6066
#5  0x42084442 in ?? ()
#6  0x101f1e34 in fold_binary (code=MULT_EXPR, type=0xf6e60150, op0=0xf6f2adc0, 
    op1=0xf7de0480) at /home/pthaugen/src/gcc/trunk/gcc/gcc/fold-const.c:10359
#7  0x42008482 in ?? ()
#8  0x101fcb40 in fold_build2_stat (code=ERROR_MARK, type=0xf7de0f60, op0=0x43, 
    op1=0xf6e60150) at /home/pthaugen/src/gcc/trunk/gcc/gcc/fold-const.c:13560
#9  0x106d5730 in chrec_fold_multiply (type=0xf6e60150, op0=0xf6f2adc0,
op1=0xf7de0480)
    at /home/pthaugen/src/gcc/trunk/gcc/gcc/tree-chrec.c:426


-- 
           Summary: segfault in extract_muldiv for cpu2006 benchmark
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pthaugen at gcc dot gnu dot org
 GCC build triplet: powerpc64-linux
  GCC host triplet: powerpc64-linux
GCC target triplet: powerpc64-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33576