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66 lines
2.0 KiB
66 lines
2.0 KiB
4 months ago
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// Copyright 2018 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// This is a "No Compile Test" suite.
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// http://dev.chromium.org/developers/testing/no-compile-tests
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#include <type_traits>
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#include "base/optional.h"
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namespace base {
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#if defined(NCTEST_EXPLICIT_CONVERTING_COPY_CONSTRUCTOR) // [r"fatal error: no matching function for call to object of type"]
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// Optional<T>(const Optional<U>& arg) constructor is marked explicit if
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// T is not convertible from "const U&".
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void WontCompile() {
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struct Test {
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// Declares as explicit so that Test is still constructible from int,
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// but not convertible.
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explicit Test(int a) {}
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};
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static_assert(!std::is_convertible<const int&, Test>::value,
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"const int& to Test is convertible");
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const Optional<int> arg(in_place, 1);
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([](Optional<Test> param) {})(arg);
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}
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#elif defined(NCTEST_EXPLICIT_CONVERTING_MOVE_CONSTRUCTOR) // [r"fatal error: no matching function for call to object of type"]
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// Optional<T>(Optional<U>&& arg) constructor is marked explicit if
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// T is not convertible from "U&&".
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void WontCompile() {
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struct Test {
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// Declares as explicit so that Test is still constructible from int,
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// but not convertible.
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explicit Test(int a) {}
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};
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static_assert(!std::is_convertible<int&&, Test>::value,
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"int&& to Test is convertible");
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([](Optional<Test> param) {})(Optional<int>(in_place, 1));
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}
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#elif defined(NCTEST_EXPLICIT_VALUE_FORWARD_CONSTRUCTOR) // [r"fatal error: no matching function for call to object of type"]
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// Optional<T>(U&&) constructor is marked explicit if T is not convertible
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// from U&&.
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void WontCompile() {
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struct Test {
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// Declares as explicit so that Test is still constructible from int,
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// but not convertible.
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explicit Test(int a) {}
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};
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static_assert(!std::is_convertible<int&&, Test>::value,
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"int&& to Test is convertible");
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([](Optional<Test> param) {})(1);
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}
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#endif
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} // namespace base
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