1  /* PR preprocessor/65238 */
       2  /* { dg-do run } */
       3  
       4  #define A unused
       5  #define B A
       6  #define C B
       7  #define D __has_attribute(unused)
       8  #define E __has_attribute(C)
       9  #define F(X) __has_attribute(X)
      10  #if !__has_attribute(unused)
      11  #error unused attribute not supported - 1
      12  #endif
      13  #if !__has_attribute(C)
      14  #error unused attribute not supported - 2
      15  #endif
      16  #if !D
      17  #error unused attribute not supported - 3
      18  #endif
      19  #if !E
      20  #error unused attribute not supported - 4
      21  #endif
      22  #if !F(unused)
      23  #error unused attribute not supported - 5
      24  #endif
      25  #if !F(C)
      26  #error unused attribute not supported - 6
      27  #endif
      28  int a = __has_attribute (unused) + __has_attribute (C) + D + E + F (unused) + F (C);
      29  int b = __has_attribute (unused);
      30  int c = __has_attribute (C);
      31  int d = D;
      32  int e = E;
      33  int f = F (unused);
      34  int g = F (C);
      35  int h = __has_attribute (
      36    unused
      37  ) + __has_attribute  (
      38  
      39  C) + F (
      40  unused
      41  
      42  ) + F
      43  (
      44  C
      45  );
      46  
      47  int
      48  main ()
      49  {
      50    if (a != 6 || b != 1 || c != 1 || d != 1 || e != 1 || f != 1 || g != 1 || h != 4)
      51      __builtin_abort ();
      52    return 0;
      53  }