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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
81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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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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#ifndef SUPPORT_VARIANT_TEST_HELPERS_HPP
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#define SUPPORT_VARIANT_TEST_HELPERS_HPP
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#include <type_traits>
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#include <utility>
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#include <cassert>
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#include "test_macros.h"
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#if TEST_STD_VER <= 14
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#error This file requires C++17
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#endif
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// FIXME: Currently the variant<T&> tests are disabled using this macro.
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#define TEST_VARIANT_HAS_NO_REFERENCES
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#ifndef TEST_HAS_NO_EXCEPTIONS
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struct CopyThrows {
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CopyThrows() = default;
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CopyThrows(CopyThrows const&) { throw 42; }
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CopyThrows& operator=(CopyThrows const&) { throw 42; }
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};
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struct MoveThrows {
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static int alive;
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MoveThrows() { ++alive; }
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MoveThrows(MoveThrows const&) {++alive;}
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MoveThrows(MoveThrows&&) { throw 42; }
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MoveThrows& operator=(MoveThrows const&) { return *this; }
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MoveThrows& operator=(MoveThrows&&) { throw 42; }
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~MoveThrows() { --alive; }
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};
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int MoveThrows::alive = 0;
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struct MakeEmptyT {
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static int alive;
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MakeEmptyT() { ++alive; }
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MakeEmptyT(MakeEmptyT const&) {
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++alive;
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// Don't throw from the copy constructor since variant's assignment
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// operator performs a copy before committing to the assignment.
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}
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MakeEmptyT(MakeEmptyT &&) {
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throw 42;
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}
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MakeEmptyT& operator=(MakeEmptyT const&) {
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throw 42;
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}
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MakeEmptyT& operator=(MakeEmptyT&&) {
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throw 42;
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}
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~MakeEmptyT() { --alive; }
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};
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static_assert(std::is_swappable_v<MakeEmptyT>, ""); // required for test
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int MakeEmptyT::alive = 0;
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template <class Variant>
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void makeEmpty(Variant& v) {
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Variant v2(std::in_place_type<MakeEmptyT>);
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try {
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v = std::move(v2);
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assert(false);
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} catch (...) {
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assert(v.valueless_by_exception());
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}
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}
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#endif // TEST_HAS_NO_EXCEPTIONS
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#endif // SUPPORT_VARIANT_TEST_HELPERS_HPP
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