1: extern int bar (void);
    2: extern int baz (void);
    3: extern int xyzzy (void);
    4: 
    5: int
    6: baz (void)
    7: {
    8:   return -42;
    9: }
   10: 
   11: int
   12: xyzzy (void)
   13: {
   14:   return 10 + bar ();
   15: }