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libcxx_old/test/std/experimental/utilities/meta/meta.detect/nonesuch.fail.cpp

33 lines
1.0 KiB
C++

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11
// <experimental/type_traits>
//
// struct nonesuch;
// nonesuch has no default constructor (C++17 §15.1)
// or initializer-list constructor (C++17 §11.6.4),
// and is not an aggregate (C++17 §11.6.1).
#include <experimental/type_traits>
#include <string>
#include "test_macros.h"
namespace ex = std::experimental;
void doSomething (const ex::nonesuch &) {}
int main(int, char**) {
ex::nonesuch *e0 = new ex::nonesuch; // expected-error {{no matching constructor for initialization of 'ex::nonesuch'}}
doSomething({}); // expected-error{{no matching function for call to 'doSomething'}}
return 0;
}