77b9abfc8e
This commit adds missing support for constexpr in std::array under all standard modes up to and including C++20. It also transforms the <array> tests to check for constexpr-friendliness under the right standard modes. Fixes https://llvm.org/PR40124 Fixes rdar://57522096 Supersedes https://reviews.llvm.org/D60666 Differential Revision: https://reviews.llvm.org/D80452
36 lines
1.1 KiB
C++
36 lines
1.1 KiB
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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// <array>
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// tuple_element<I, array<T, N> >::type
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// Prevent -Warray-bounds from issuing a diagnostic when testing with clang verify.
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#if defined(__clang__)
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#pragma clang diagnostic ignored "-Warray-bounds"
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#endif
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#include <array>
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#include <cassert>
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// std::array is explicitly allowed to be initialized with A a = { init-list };.
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// Disable the missing braces warning for this reason.
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#include "disable_missing_braces_warning.h"
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int main(int, char**)
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{
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{
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typedef double T;
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typedef std::array<T, 3> C;
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std::tuple_element<3, C> foo; // expected-note {{requested here}}
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// expected-error-re@array:* {{static_assert failed{{( due to requirement '3U[L]{0,2} < 3U[L]{0,2}')?}} "Index out of bounds in std::tuple_element<> (std::array)"}}
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}
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return 0;
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}
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