[Bug tree-optimization/51042] [4.7 Regression] endless recursion in phi_translate

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51042

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011-11-09
                 CC|                            |jakub at gcc dot gnu.org
          Component|c                           |tree-optimization
   Target Milestone|---                         |4.7.0
            Summary|segfault                    |[4.7 Regression] endless
                   |                            |recursion in phi_translate
     Ever Confirmed|0                           |1

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-11-09 
08:59:47 UTC ---
Caused by http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155360

int a, b, c, d, e[2][2];

void
foo (int x)
{
  while (x)
    {
      for (d = 0; d <= 1; d = 1)
        if (e[c][a])
          break;
      for (b = 0; b <= 0; b = 1)
        {
          e[c][a] = a;
          if (a)
            break;
        }
    }
}