gcc/testsuite/gcc.c-torture/compile/20020605-1.c

   1 /* This testcase caused on IA-32 -O2 endless loop in
   2    merge_blocks when trying to merge a basic block
   3    with itself.  */
   4
   5 void f (void)
   6 {
   7   char *c;
   8   do
   9     {
  10       if (c)
  11         break;
  12     }
  13   while (1);
  14   if (!c)
  15     while (1)
  16       f ();
  17 }