gcc/testsuite/c-c++-common/cpp/pr65238-1.c

   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 }