Files
clang-p2996/libcxx/test/std/containers/associative/map/map.cons/copy_assign.addressof.compile.pass.cpp
Mark de Wever b8608b8723 [libc++] Use addressof in assignment operator.
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
2021-10-07 18:10:47 +02:00

34 lines
807 B
C++

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <map>
// class map
// map& operator=(const map& m);
// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
#include <map>
#include "test_macros.h"
#include "operator_hijacker.h"
void test() {
{
std::map<int, operator_hijacker> mo;
std::map<int, operator_hijacker> m;
m = mo;
}
{
std::map<operator_hijacker, int> mo;
std::map<operator_hijacker, int> m;
m = mo;
}
}