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libcxx_old/test/std/utilities/meta/meta.const.eval/is_constant_evaluated.fail.cpp

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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
// <type_traits>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
int main(int, char**)
{
#ifndef __cpp_lib_is_constant_evaluated
// expected-error@+1 {{no member named 'is_constant_evaluated' in namespace 'std'}}
bool b = std::is_constant_evaluated();
#else
// expected-error@+1 {{static_assert failed}}
static_assert(!std::is_constant_evaluated(), "");
#endif
return 0;
}