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250205c9d2
Clang recently added __builtin_is_constant_evaluated() and GCC 9.0 has it as well. This patch adds support for it in libc++. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@359119 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
806 B
C++
30 lines
806 B
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03
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// <type_traits>
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#include <type_traits>
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#include <cassert>
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#include "test_macros.h"
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int main(int, char**)
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{
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#ifndef __cpp_lib_is_constant_evaluated
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// expected-error@+1 {{no member named 'is_constant_evaluated' in namespace 'std'}}
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bool b = std::is_constant_evaluated();
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#else
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// expected-error@+1 {{static_assert failed}}
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static_assert(!std::is_constant_evaluated(), "");
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#endif
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return 0;
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}
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