1  /* Example of extra argument to "malloc" attribute.  */
       2  
       3  struct foo;
       4  extern void foo_release (int, struct foo *);
       5  extern struct foo *foo_acquire (void)
       6    __attribute__ ((malloc (foo_release, 2)));
       7  
       8  void test_1 (void)
       9  {
      10    struct foo *p = foo_acquire ();
      11    foo_release (0, p);
      12  }