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7c3769df62
to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@351648 91177308-0d34-0410-b5e6-96231b3b80d8
93 lines
2.5 KiB
C++
93 lines
2.5 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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// implicitly generated array constructors / assignment operators
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#include <array>
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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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// 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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// In C++03 the copy assignment operator is not deleted when the implicitly
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// generated operator would be ill-formed; like in the case of a struct with a
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// const member.
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#if TEST_STD_VER < 11
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#define TEST_NOT_COPY_ASSIGNABLE(T) ((void)0)
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#else
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#define TEST_NOT_COPY_ASSIGNABLE(T) static_assert(!std::is_copy_assignable<T>::value, "")
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#endif
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struct NoDefault {
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NoDefault(int) {}
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};
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int main() {
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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 = {1.1, 2.2, 3.3};
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C c2 = c;
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c2 = c;
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static_assert(std::is_copy_constructible<C>::value, "");
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static_assert(std::is_copy_assignable<C>::value, "");
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}
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{
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typedef double T;
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typedef std::array<const T, 3> C;
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C c = {1.1, 2.2, 3.3};
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C c2 = c;
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((void)c2);
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static_assert(std::is_copy_constructible<C>::value, "");
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TEST_NOT_COPY_ASSIGNABLE(C);
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}
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{
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typedef double T;
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typedef std::array<T, 0> C;
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C c = {};
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C c2 = c;
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c2 = c;
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static_assert(std::is_copy_constructible<C>::value, "");
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static_assert(std::is_copy_assignable<C>::value, "");
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}
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{
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// const arrays of size 0 should disable the implicit copy assignment operator.
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typedef double T;
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typedef std::array<const T, 0> C;
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C c = {{}};
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C c2 = c;
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((void)c2);
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static_assert(std::is_copy_constructible<C>::value, "");
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TEST_NOT_COPY_ASSIGNABLE(C);
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}
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{
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typedef NoDefault T;
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typedef std::array<T, 0> C;
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C c = {};
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C c2 = c;
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c2 = c;
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static_assert(std::is_copy_constructible<C>::value, "");
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static_assert(std::is_copy_assignable<C>::value, "");
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}
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{
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typedef NoDefault T;
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typedef std::array<const T, 0> C;
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C c = {{}};
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C c2 = c;
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((void)c2);
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static_assert(std::is_copy_constructible<C>::value, "");
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TEST_NOT_COPY_ASSIGNABLE(C);
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}
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}
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