gcc/testsuite/gcc.dg/pr61852.c

   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 }