[Webkit-unassigned] [Bug 180054] New: Dangerous downcast via static_cast for find delegate.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=180054

            Bug ID: 180054
           Summary: Dangerous downcast via static_cast for find delegate.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jeremyj-wk at apple.com

WKWebView:
- (void)_setFindDelegate:(id<_WKFindDelegate>)findDelegate
{
    static_cast<WebKit::FindClient&>(_page->findClient()).setDelegate(findDelegate);
}



void WebPageProxy::close()
...
    m_findClient = std::make_unique<API::FindClient>();


Calling _setFindDelegate: after the PageProxy has been closed is unsafe.

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