[Bug tree-optimization/51246] [4.7 Regression] ICE in replace_ref_with, at tree-predcom.c:1309

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51246

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011-11-23
                 CC|                            |jakub at gcc dot gnu.org
   Target Milestone|---                         |4.7.0
            Summary|ICE in replace_ref_with, at |[4.7 Regression] ICE in
                   |tree-predcom.c:1309         |replace_ref_with, at
                   |                            |tree-predcom.c:1309
     Ever Confirmed|0                           |1

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-11-23 
17:29:40 UTC ---
Shorter testcase for -O3 -w:

int a, *b;

void
test (void)
{
  while (1)
    {
      int c;
      a = c;
      b = &c;
    }
}

Broken by http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=181172