libcxx/test/std/utilities/utility/as_const/as_const.compile.fail.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
  11 // template <class T> constexpr add_const<T>& as_const(T& t) noexcept;      // C++17
  12 // template <class T>           add_const<T>& as_const(const T&&) = delete; // C++17
  13
  14 #include <utility>
  15
  16 struct S {int i;};
  17
  18 int main(int, char**)
  19 {
  20     std::as_const(S{});
  21
  22   return 0;
  23 }