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libcxx_old/test/std/utilities/any/any.class/any.cons/default.pass.cpp

49 lines
1.1 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, c++14
// <any>
// any() noexcept;
#include <any>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
#include "any_helpers.h"
#include "count_new.hpp"
int main(int, char**)
{
using std::any;
{
static_assert(
std::is_nothrow_default_constructible<any>::value
, "Must be default constructible"
);
}
{
struct TestConstexpr : public std::any {
constexpr TestConstexpr() : std::any() {}
};
#ifdef _LIBCPP_SAFE_STATIC
_LIBCPP_SAFE_STATIC static std::any a;
((void)a);
#endif
}
{
DisableAllocationGuard g; ((void)g);
any const a;
assertEmpty(a);
}
return 0;
}