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LibWeb: Don't access SharedImageRequest::m_document in destructor

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It's not safe to access m_document here since GC may have deleted it
by the time we're being deleted. Instead, move this to a finalize()
override, since those are guaranteed to be called while both objects
are still alive.
This commit is contained in:
Andreas Kling 2023-12-23 20:50:23 +01:00
parent 6c1fcc5f7e
commit 41941aeb10
2 changed files with 9 additions and 5 deletions
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5
Userland/Libraries/LibWeb/HTML/SharedImageRequest.cpp
View file

@ -40,8 +40,11 @@ SharedImageRequest::SharedImageRequest(JS::NonnullGCPtr<Page> page, AK::URL url,
{ {
} }
SharedImageRequest::~SharedImageRequest() SharedImageRequest::~SharedImageRequest() = default;
void SharedImageRequest::finalize()
{ {
Base::finalize();
auto& shared_image_requests = m_document->shared_image_requests(); auto& shared_image_requests = m_document->shared_image_requests();
shared_image_requests.remove(m_url); shared_image_requests.remove(m_url);
} }

9
Userland/Libraries/LibWeb/HTML/SharedImageRequest.h
View file

@ -17,14 +17,14 @@
namespace Web::HTML { namespace Web::HTML {
class SharedImageRequest : public JS::Cell { class SharedImageRequest final : public JS::Cell {
JS_CELL(ImageRequest, JS::Cell); JS_CELL(ImageRequest, JS::Cell);
JS_DECLARE_ALLOCATOR(SharedImageRequest); JS_DECLARE_ALLOCATOR(SharedImageRequest);
public: public:
[[nodiscard]] static JS::NonnullGCPtr<SharedImageRequest> get_or_create(JS::Realm&, JS::NonnullGCPtr<Page>, AK::URL const&); [[nodiscard]] static JS::NonnullGCPtr<SharedImageRequest> get_or_create(JS::Realm&, JS::NonnullGCPtr<Page>, AK::URL const&);
~SharedImageRequest(); virtual ~SharedImageRequest() override;
AK::URL const& url() const { return m_url; } AK::URL const& url() const { return m_url; }
@ -40,11 +40,12 @@ public:
bool is_fetching() const; bool is_fetching() const;
bool needs_fetching() const; bool needs_fetching() const;
virtual void visit_edges(JS::Cell::Visitor&) override;
private: private:
explicit SharedImageRequest(JS::NonnullGCPtr<Page>, AK::URL, JS::NonnullGCPtr<DOM::Document>); explicit SharedImageRequest(JS::NonnullGCPtr<Page>, AK::URL, JS::NonnullGCPtr<DOM::Document>);
virtual void finalize() override;
virtual void visit_edges(JS::Cell::Visitor&) override;
void handle_successful_fetch(AK::URL const&, StringView mime_type, ByteBuffer data); void handle_successful_fetch(AK::URL const&, StringView mime_type, ByteBuffer data);
void handle_failed_fetch(); void handle_failed_fetch();