1  /* PR c/65345 */
       2  /* { dg-do compile } */
       3  /* { dg-options "" } */
       4  
       5  _Atomic int i = 3;
       6  
       7  int a1 = sizeof (i + 1);
       8  int a2 = sizeof (i = 0);
       9  int a3 = sizeof (i++);
      10  int a4 = sizeof (i--);
      11  int a5 = sizeof (-i);
      12  
      13  int b1 = _Alignof (i + 1);
      14  int b2 = _Alignof (i = 0);
      15  int b3 = _Alignof (i++);
      16  int b4 = _Alignof (i--);
      17  int b5 = _Alignof (-i);
      18  
      19  int c1 = i; /* { dg-error "initializer element is not constant" } */
      20  int c2 = (i ? 1 : 2); /* { dg-error "initializer element is not constant" } */
      21  int c3[i]; /* { dg-error "variably modified" } */
      22  int c4 = 0 || i; /* { dg-error "initializer element is not constant" } */
      23  int c5 = (i += 10); /* { dg-error "initializer element is not constant" } */
      24  
      25  _Static_assert (_Generic (i, int: 1, default: 0) == 1, "1");
      26  _Static_assert (_Generic (i + 1, int: 1, default: 0) == 1, "2");
      27  _Static_assert (_Generic (i = 0, int: 1, default: 0) == 1, "3");
      28  _Static_assert (_Generic (i++, int: 1, default: 0) == 1, "4");
      29  _Static_assert (_Generic (i--, int: 1, default: 0) == 1, "5");
      30  
      31  void fn1 (int a[i + 1]);
      32  void fn2 (int a[i = 0]);
      33  void fn3 (int a[i++]);
      34  void fn4 (int a[i--]);
      35  void fn5 (int a[-i]);