1  /* Test C2x maybe_unused attribute: valid uses.  */
       2  /* { dg-do compile } */
       3  /* { dg-options "-std=c2x -pedantic-errors -Wall -Wextra -Wunused" } */
       4  
       5  [[maybe_unused]] static void f1 (void) {}
       6  
       7  [[__maybe_unused__]] const int c1 = 1;
       8  static int c2 [[maybe_unused]] = 2;
       9  
      10  int
      11  g ([[maybe_unused]] int x, int y)
      12  {
      13    [[maybe_unused]] typedef float F;
      14    [[maybe_unused]] int a;
      15    int b [[__maybe_unused__]];
      16    int c [[maybe_unused]];
      17   [[__maybe_unused__]] label1:
      18    c = y;
      19   [[maybe_unused]] label2:
      20    return y;
      21  }
      22  
      23  struct [[maybe_unused]] s { double d; };
      24  
      25  struct s2 { [[__maybe_unused__]] int a; int b [[maybe_unused]]; } x;
      26  
      27  enum e { E1 [[maybe_unused]] };
      28  
      29  union [[maybe_unused]] u { int x; };
      30  
      31  enum [[maybe_unused]] eu { E2 };
      32  
      33  union u2 { [[maybe_unused]] int a; int b [[maybe_unused]]; } y;
      34  
      35  void
      36  g2 (int x)
      37  {
      38    switch (x)
      39      {
      40        [[maybe_unused]] case 1: ;
      41        [[__maybe_unused__]] case 2: ;
      42        [[maybe_unused]] default: ;
      43      }
      44  }