1  /* { dg-do compile } */
       2  /* { dg-options "-O" } */
       3  /* { dg-require-alias "" } */
       4  
       5  struct X {
       6    int a;
       7  };
       8  const int a = 0;
       9  static struct X A __attribute__((alias("a")));
      10  void foo() { struct X b = A; }