1  #include <stdio.h>
       2  
       3  extern int foo (int x);
       4  
       5  int
       6  bar (int x)
       7  {
       8    puts ("bar");
       9    fflush (stdout);
      10    x = foo (x - 4);
      11    puts ("bar after foo");
      12    return x;
      13  }