llvm-project/libcxx/test/std/utilities/meta/meta.const.eval/is_constant_evaluated.fail.cpp
Louis Dionne 31cbe0f240 [libc++] Remove the c++98 Lit feature from the test suite
C++98 and C++03 are effectively aliases as far as Clang is concerned.
As such, allowing both std=c++98 and std=c++03 as Lit parameters is
just slightly confusing, but provides no value. It's similar to allowing
both std=c++17 and std=c++1z, which we don't do.

This was discovered because we had an internal bot that ran the test
suite under both c++98 AND c++03 -- one of which is redundant.

Differential Revision: https://reviews.llvm.org/D80926
2020-06-03 09:37:22 -04:00

31 lines
938 B
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++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(), "");
// expected-warning@-1 0-1 {{'std::is_constant_evaluated' will always evaluate to 'true' in a manifestly constant-evaluated expression}}
#endif
return 0;
}