RESOLVED FIXED258313
WebPageProxy::setToolTip accesses a null PageClient 
https://bugs.webkit.org/show_bug.cgi?id=258313
Summary WebPageProxy::setToolTip accesses a null PageClient
Abrar Rahman Protyasha
Reported 2023-06-20 12:04:21 PDT
In 264455@main, we introduced `WebPageProxy::dispatchMouseDidMoveOverElementAsynchronously`, which asks to perform `WebPageProxy::mouseDidMoveOverElement` at a future time. It turns out there's a null access on `m_pageClient` when we then call into `WebPageProxy::setToolTip`, which happens because we hold a `WeakPtr<PageClient>` instance to the `PageClient` object, meaning there are no guarantees on the PageClient instance's lifetime. We should make sure this null deference does not happen.
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Add attachment proposed patch, testcase, etc.
Abrar Rahman Protyasha
Comment 1 2023-06-20 12:04:26 PDT
rdar://110501313
Abrar Rahman Protyasha
Comment 2 2023-06-20 12:08:18 PDT
Pull request: https://github.com/WebKit/WebKit/pull/15113
EWS
Comment 3 2023-06-23 03:28:58 PDT
Committed 265456@main (46b03afa5a23): <https://commits.webkit.org/265456@main> Reviewed commits have been landed. Closing PR #15113 and removing active labels.
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