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b8608b8723
Replace `&__rhs` with `_VSTD::addressof(__rhs)` to guard against ADL hijacking of `operator&` in `operator=`. Thanks to @CaseyCarter for bringing it to our attention. Similar issues with hijacking `operator&` still exist, they will be addressed separately. Reviewed By: #libc, Quuxplusone, ldionne Differential Revision: https://reviews.llvm.org/D110852
40 lines
1.2 KiB
C++
40 lines
1.2 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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#ifndef SUPPORT_OPERATOR_HIJACKER_H
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#define SUPPORT_OPERATOR_HIJACKER_H
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#include <cstddef>
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#include <functional>
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#include "test_macros.h"
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/// Helper struct to test ADL-hijacking in containers.
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///
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/// The class has some additional operations to be usable in all containers.
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struct operator_hijacker {
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bool operator<(const operator_hijacker&) const { return true; }
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bool operator==(const operator_hijacker&) const { return true; }
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template <typename T>
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friend void operator&(T&&) = delete;
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template <class T, class U>
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friend void operator,(T&&, U&&) = delete;
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template <class T, class U>
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friend void operator&&(T&&, U&&) = delete;
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template <class T, class U>
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friend void operator||(T&&, U&&) = delete;
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};
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template <>
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struct std::hash<operator_hijacker> {
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size_t operator()(const operator_hijacker&) const { return 0; }
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};
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#endif // SUPPORT_OPERATOR_HIJACKER_H
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