237206bfda
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@248987 91177308-0d34-0410-b5e6-96231b3b80d8
60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <array>
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// template <size_t I, class T, size_t N> T& get(array<T, N>& a);
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#include <array>
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#include <cassert>
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#include "test_macros.h"
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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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#if TEST_STD_VER > 11
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struct S {
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std::array<int, 3> a;
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int k;
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constexpr S() : a{1,2,3}, k(std::get<2>(a)) {}
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};
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constexpr std::array<int, 2> getArr () { return { 3, 4 }; }
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#endif
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int main()
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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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C c = {1, 2, 3.5};
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std::get<1>(c) = 5.5;
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assert(c[0] == 1);
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assert(c[1] == 5.5);
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assert(c[2] == 3.5);
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}
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#if TEST_STD_VER > 11
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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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constexpr C c = {1, 2, 3.5};
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static_assert(std::get<0>(c) == 1, "");
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static_assert(std::get<1>(c) == 2, "");
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static_assert(std::get<2>(c) == 3.5, "");
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}
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{
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static_assert(S().k == 3, "");
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static_assert(std::get<1>(getArr()) == 4, "");
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}
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#endif
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}
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