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b7e847e58b
We now null out smart pointers *before* calling unref on the pointee. This ensures that the same smart pointer can't be used to acquire a new reference to the pointee after its destruction has begun. I ran into this when destroying a non-empty IntrusiveList of RefPtrs, but the problem was more general so this fixes it for all of RefPtr, NonnullRefPtr, OwnPtr and NonnullOwnPtr.
35 lines
941 B
C++
35 lines
941 B
C++
/*
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* Copyright (c) 2018-2023, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibTest/TestCase.h>
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#include <AK/DeprecatedString.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/OwnPtr.h>
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TEST_CASE(destroy_self_owning_object)
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{
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// This test is a little convoluted because SelfOwning can't own itself
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// through a NonnullOwnPtr directly. We have to use an intermediate object ("Inner").
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struct SelfOwning {
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SelfOwning()
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{
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}
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struct Inner {
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explicit Inner(NonnullOwnPtr<SelfOwning> self)
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: self(move(self))
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{
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}
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NonnullOwnPtr<SelfOwning> self;
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};
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OwnPtr<Inner> inner;
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};
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OwnPtr<SelfOwning> object = make<SelfOwning>();
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auto* object_ptr = object.ptr();
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object_ptr->inner = make<SelfOwning::Inner>(object.release_nonnull());
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object_ptr->inner = nullptr;
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}
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