[Webkit-unassigned] [Bug 50868] inspector/debugger-step-out.html crashing intermittently in the bots

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=50868





--- Comment #10 from Yury Semikhatsky <yurys at chromium.org>  2010-12-24 08:22:14 PST ---
(In reply to comment #9)
> (From update of attachment 77413 [details])
> The change looks good, but we should be wary of holding a stale RefPtr<CSSStyleDeclaration> that has been dereferenced by the inspected page elements (this is the root cause of the crashes we are observing), which implies that most likely the data in the Web Inspector and the inspected page will be inconsistent.

I'm pretty sure that the cause of the crash is that the StyledElement pointer is stale as well because I was able to reproduce the crash couple of times even with all pointers to CSS objects being RefPtrs but with raw Element pointer in InspectorStyleSheetForInlineStyle::m_element. Anyways incorrect behavior of CSS inspector is a less severe issue than non-deterministic crashes of all inspector tests. You will be able to roll out this patch locally if you want to use the crashes to spot the real problem in the code.

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