gcc/testsuite/gcc.dg/uninit-23.c

   1 /* PR tree-optimization/78455 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -Wuninitialized" } */
   4
   5 int ij;
   6
   7 void
   8 ql (void)
   9 {
  10   int m5 = 0;
  11
  12   for (;;)
  13   {
  14     if (0)
  15       for (;;)
  16       {
  17         int *go;
  18         int *t4 = go; /* { dg-warning "is used uninitialized" } */
  19
  20  l1:
  21         *t4 = (*t4 != 0) ? 0 : 2;
  22       }
  23
  24     if (ij != 0)
  25       goto l1;
  26   }
  27 }