clang/test/Sema/c2x-maybe_unused-errors.c

   1 // RUN: %clang_cc1 -fsyntax-only -Wunused -std=c2x -verify %s
   2
   3 struct [[maybe_unused]] S1 { // ok
   4   int a [[maybe_unused]];
   5 };
   6 struct [[maybe_unused, maybe_unused]] S2 { // ok
   7   int a;
   8 };
   9 struct [[maybe_unused("Wrong")]] S3 { // expected-error {{'maybe_unused' cannot have an argument list}}
  10   int a;
  11 };
  12
  13 void func(void) {
  14   int a[10] [[maybe_unused]]; // expected-error {{'maybe_unused' attribute cannot be applied to types}}
  15 }