[Webkit-unassigned] [Bug 182532] REGRESSION(r227758): Webpage fails to load due to crash in com.apple.WebKit: WebKit::WebFrameLoaderClient::dispatchDecidePolicyForResponse + 267

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=182532

--- Comment #5 from Antti Koivisto <koivisto at iki.fi> ---
> Couldn't we move those null checks *betore* setting up the policy listener
> on the WebFrame earlier? This way, we can keep using the function as is, and
> we do not unnecessarily set up a policy listener.

I assumed there was a reason why they are after. Specifically setUpPolicyListener may call arbitrary code (m_willSubmitFormCompletionHandlers in invalidatePolicyListener) and if those null coreFrame/provisionalDocumentLoader we would crash.

Alex needs to answer whether that was the reason the checks are after setUpPolicyListener.

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