1  int
       2  foo_v1 (int a)
       3  {
       4    return 1;
       5  }
       6  asm (".symver foo_v1, foo@v1");
       7  
       8  int
       9  foo_v2 (int a)
      10  {
      11    return 2;
      12  }
      13  asm (".symver foo_v2, foo@v2");
      14  
      15  int
      16  foo (int a)
      17  {
      18    return 3;
      19  }
      20  asm (".symver foo, foo@@@v3");