gcc/testsuite/gcc.dg/pr79499.c

   1 /* PR middle-end/79499 */
   2 /* { dg-do compile { target split_stack } } */
   3 /* { dg-options "-O2 -fsplit-stack -fno-omit-frame-pointer" } */
   4
   5 struct S { struct S *a, *b; };
   6
   7 void
   8 foo (struct S *x)
   9 {
  10   do
  11     x->b = x->a;
  12   while (x = x->a);
  13 }