1  int foo __attribute__ ((section ("_data_foo"))) = 0;
       2  extern int foo_alias __attribute__ ((weak, alias ("foo")));
       3  extern char __start__data_foo;
       4  __asm__ (".type __start__data_foo,%object");
       5  int x1 = 1;
       6  int x2 = 2;
       7  
       8  char *
       9  bar ()
      10  {
      11    foo = -1;
      12    return &__start__data_foo;
      13  }