[Bug tree-optimization/23853] New: ICE: in tree_low_cst, at tree.c:4270

["micis at gmx dot de" <gcc-bugzilla at gcc dot gnu dot org>]

When I compile the small program below using the actual snapshot 
(20050909) I get an ICE. This ICE is new, the snapshot from last week is 
working.

Michael Cieslinski


<file tc.i>

int Foo ()
{
    int a[16];
    int i;
    for (i=0; i<sizeof(void*); ++i)
    {
        int *p;
        for (p=a+1; p<a+16; ++p)
            *p += p[-1];
    }
    return a[0];
}


gcc41o -O2 -ftree-vectorize -c tc.i
tc.i: In function 'Foo':
tc.i:2: internal compiler error: in tree_low_cst, at tree.c:4270
Please submit a full bug report, with preprocessed source if appropriate.


gcc41o -v
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.1-20050909/configure --prefix=/usr/local/gcc41o
 --program-suffix=41o --with-arch=opteron --enable-languages=c,c++
 --enable-checking
Thread model: posix
gcc version 4.1.0 20050909 (experimental)

-- 
           Summary: ICE: in tree_low_cst, at tree.c:4270
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: micis at gmx dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23853