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
62 lines
1.3 KiB
C++
62 lines
1.3 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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// array();
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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 "test_macros.h"
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#include "disable_missing_braces_warning.h"
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struct NoDefault {
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TEST_CONSTEXPR NoDefault(int) { }
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};
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struct Default {
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TEST_CONSTEXPR Default() { }
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};
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TEST_CONSTEXPR_CXX14 bool tests()
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{
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{
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std::array<Default, 3> array;
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assert(array.size() == 3);
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}
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{
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std::array<Default, 0> array;
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assert(array.size() == 0);
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}
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{
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typedef std::array<NoDefault, 0> C;
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C c;
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assert(c.size() == 0);
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C c1 = {};
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assert(c1.size() == 0);
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C c2 = {{}};
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assert(c2.size() == 0);
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}
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return true;
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}
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int main(int, char**)
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{
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tests();
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#if TEST_STD_VER >= 14
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static_assert(tests(), "");
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#endif
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return 0;
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}
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