1  /* Test C2x attribute syntax.  Test unknown standard attributes
       2     diagnosed with a pedwarn.  */
       3  /* { dg-do compile } */
       4  /* { dg-options "-std=c2x -pedantic-errors" } */
       5  
       6  [[unknown_attribute]]; /* { dg-error "attribute ignored" } */
       7  
       8  [[unknown_attribute]] extern int a; /* { dg-error "attribute ignored" } */
       9  extern int [[unknown_attribute(123)]] a; /* { dg-error "attribute ignored" } */
      10  extern int a [[unknown_attribute("")]]; /* { dg-error "attribute ignored" } */
      11  
      12  int f () [[unknown_attribute]]; /* { dg-error "attribute ignored" } */
      13  int f (void) [[unknown_attribute(1)]]; /* { dg-error "attribute ignored" } */
      14  int g ([[unknown_attribute]] int a); /* { dg-error "attribute ignored" } */
      15  int g (int [[unknown_attribute]] a); /* { dg-error "attribute ignored" } */
      16  int g (int a [[unknown_attribute]]); /* { dg-error "attribute ignored" } */
      17  int g ([[unknown_attribute]] int); /* { dg-error "attribute ignored" } */
      18  int g (int [[unknown_attribute]]); /* { dg-error "attribute ignored" } */
      19  int g (int) [[unknown_attribute]]; /* { dg-error "attribute ignored" } */
      20  
      21  int *[[unknown_attribute]] p; /* { dg-error "attribute ignored" } */
      22  int b[3] [[unknown_attribute]]; /* { dg-error "attribute ignored" } */
      23  
      24  int h (int () [[unknown_attribute]]); /* { dg-error "attribute ignored" } */
      25  
      26  struct [[unknown_attribute]] s; /* { dg-error "attribute ignored" } */
      27  union [[unknown_attribute]] u; /* { dg-error "attribute ignored" } */
      28  
      29  struct [[unknown_attribute]] s2 { int a; }; /* { dg-error "attribute ignored" } */
      30  union [[unknown_attribute(x)]] u2 { int a; }; /* { dg-error "attribute ignored" } */
      31  
      32  struct s3 { [[unknown_attribute]] int a; }; /* { dg-error "attribute ignored" } */
      33  struct s4 { int [[unknown_attribute]] a; }; /* { dg-error "attribute ignored" } */
      34  union u3 { [[unknown_attribute]] int a; }; /* { dg-error "attribute ignored" } */
      35  union u4 { int [[unknown_attribute]] a; }; /* { dg-error "attribute ignored" } */
      36  
      37  int z = sizeof (int [[unknown_attribute]]); /* { dg-error "attribute ignored" } */
      38  
      39  enum [[unknown_attribute]] { E1 }; /* { dg-error "attribute ignored" } */
      40  enum { E2 [[unknown_attribute]] }; /* { dg-error "attribute ignored" } */
      41  enum { E3 [[unknown_attribute]] = 4 }; /* { dg-error "attribute ignored" } */
      42  
      43  void
      44  func (void) [[unknown_attribute]] { /* { dg-error "attribute ignored" } */
      45    [[unknown_attribute]] int var; /* { dg-error "attribute ignored" } */
      46    [[unknown_attribute]] { } /* { dg-error "attribute ignored" } */
      47    [[unknown_attribute(!)]]; /* { dg-error "attribute ignored" } */
      48    [[unknown_attribute]] var = 1; /* { dg-error "attribute ignored" } */
      49    [[unknown_attribute]] x: var = 2; /* { dg-error "attribute ignored" } */
      50    for ([[unknown_attribute]] int zz = 1; zz < 10; zz++) ; /* { dg-error "attribute ignored" } */
      51  }