libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/result_of.deprecated.verify.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03, c++11, c++14
  10 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS
  11
  12 // type_traits
  13
  14 // result_of
  15
  16 #include <type_traits>
  17
  18 void f() {
  19   [[maybe_unused]] std::result_of<int (*())()> a; // expected-warning {{'result_of<int (*())()>' is deprecated}}
  20 }