libcxx/test/std/utilities/utility/pairs/pair.piecewise/piecewise_construct_t.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
  10
  11 // <utility>
  12
  13 // struct piecewise_construct_t { explicit piecewise_construct_t() = default; };
  14 // constexpr piecewise_construct_t piecewise_construct = piecewise_construct_t();
  15
  16 // This test checks for https://wg21.link/LWG2510.
  17
  18 #include <utility>
  19
  20 std::piecewise_construct_t f() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}