gcc/testsuite/gcc.c-torture/execute/20030404-1.c

   1 /* This exposed a bug in tree-ssa-ccp.c.  Since 'j' and 'i' are never
   2    defined, CCP was not traversing the edges out of the if(), which caused
   3    the PHI node for 'k' at the top of the while to only be visited once.
   4    This ended up causing CCP to think that 'k' was the constant '1'.  */
   5 main()
   6 {
   7   int i, j, k;
   8
   9   k = 0;
  10   while (k < 10)
  11     {
  12       k++;
  13       if (j > i)
  14         j = 5;
  15       else
  16         j =3;
  17     }
  18
  19   if (k != 10)
  20     abort ();
  21
  22   return 0;
  23 }