gcc/testsuite/gcc.c-torture/compile/call.c

/* { dg-skip-if "requires untyped assembly" { ! untyped_assembly } { "-O0" } { "" } } */
/* { dg-additional-options "-std=gnu89" } */

int foo () {}

main (a, b)
{
  foo (foo (a, b), foo (b, a));
  return 0;
}