[Bug c/51256] New: ICE with invalid parameter for __atomic builtin

[reichelt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51256

             Bug #: 51256
           Summary: ICE with invalid parameter for __atomic builtin
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: reichelt@gcc.gnu.org


The following invalid code snippet triggers an ICE on trunk:

=================================================
void foo(void* p)
{
  __atomic_compare_exchange(p, p, p, 0, 0, 0);
}
=================================================

bug.c: In function 'foo':
bug.c:3:3: internal compiler error: in tree_low_cst, at tree.c:6512
Please submit a full bug report, [etc.]