1  /* PR c/61852 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-Wimplicit-function-declaration" } */
       4  
       5  int
       6  f (int a)
       7  {
       8    int b = a + a + a + ff (a); /* { dg-warning "23:implicit declaration of function" } */
       9    return b;
      10  }