1  /* { dg-do compile } */
       2  /* { dg-require-effective-target lp64 } */
       3  /* { dg-require-effective-target fpic } */
       4  /* { dg-options "-O2 -mcx16 -fpic -mcmodel=large" } */
       5  
       6  __int128 i;
       7  
       8  void test ()
       9  {
      10    __sync_val_compare_and_swap (&i, i, i);
      11  }