gcc/testsuite/gcc.dg/gnu2x-attr-syntax-2.c

   1 /* Test C2x attribute syntax.  Invalid uses of attributes with GNU C
   2    features.  */
   3 /* { dg-do compile } */
   4 /* { dg-options "-std=gnu2x -w" } */
   5
   6 /* Attributes cannot be used as prefix attributes on old-style
   7    parameter declarations or on function declarators with identifier
   8    lists (removed from C2x).  */
   9
  10 void (*f(a, b) [[]])() int a, b; { } /* { dg-error "expected" } */
  11
  12 void f(x, y) int x; [[]] int y; { } /* { dg-error "expected" } */
  13
  14 /* Nonempty attributes cannot be used as postfix attributes with
  15    __auto_type.  */
  16 __auto_type [[gnu::no_such_attr]] x = 1; /* { dg-error "'__auto_type' followed by" } */