[Webkit-unassigned] [Bug 47083] New: Web Inspector: regular crashes in WebCore::RenderStyle::hasPseudoStyle(WebCore::PseudoId)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=47083

           Summary: Web Inspector: regular crashes in
                    WebCore::RenderStyle::hasPseudoStyle(WebCore::PseudoId
                    )
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Web Inspector
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: phiw at l-c-n.com
                CC: timothy at apple.com, rik at webkit.org, keishi at webkit.org,
                    pmuellr at yahoo.com, joepeck at webkit.org,
                    pfeldman at chromium.org, yurys at chromium.org,
                    bweinstein at apple.com, apavlov at chromium.org,
                    loislo at chromium.org


Created an attachment (id=69627)
 --> (https://bugs.webkit.org/attachment.cgi?id=69627)
Apple crash log

Possible steps to reproduce:
1. open the inspector on any page that make use of the :hover and/ or :focus pseudo class
2. inspect the node (e.g. link)
3. click on the link (and navigate away from the page)

I haven't manage to reproduce this with a minimal test case though. I do experience this regularly on a site I'm developing.

Thread 0 Crashed:  Dispatch queue: com.apple.main-thread
0   com.apple.WebCore                 0x00000001015bfb7e WebCore::RenderStyle::hasPseudoStyle(WebCore::PseudoId) const + 14
1   com.apple.WebCore                 0x0000000100d9729e WebCore::CSSStyleSelector::styleForElement(WebCore::Element*, WebCore::RenderStyle*, bool, bool, bool) + 1502
2   com.apple.WebCore                 0x00000001014cda32 WebCore::Node::styleForRenderer() + 82
3   com.apple.WebCore                 0x00000001014cf85f WebCore::Node::createRendererIfNeeded() + 143
4   com.apple.WebCore                 0x0000000100ec72d0 WebCore::Element::attach() + 32
5   com.apple.WebCore                 0x0000000100fcc771 WebCore::HTMLLIElement::attach() + 17

(full crash log attached)

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