gcc/testsuite/gcc.dg/pr59630.c - gcc - Git at Google

 /* { dg-do compile } */
 /* { dg-options "-O" } */

 _Bool foo()
 {
   _Bool (*f)(int) = __builtin_abs; /* { dg-warning "" } */
   return f(0);
 }
	/* { dg-do compile } */
	/* { dg-options "-O" } */

	_Bool foo()
	{
	_Bool (f)(int) = __builtin_abs; / { dg-warning "" } */
	return f(0);
	}