[Webkit-unassigned] [Bug 77078] New: chrome.dll!WebCore::CSSStyleDeclaration::diff ReadAV at NULL (e659be0a7f97fe3167c83ab4966701f9)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=77078

           Summary: chrome.dll!WebCore::CSSStyleDeclaration::diff
                    ReadAV at NULL (e659be0a7f97fe3167c83ab4966701f9)
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Windows Vista
            Status: NEW
          Severity: Normal
          Priority: P1
         Component: HTML Editing
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: skylined at chromium.org
                CC: rniwa at webkit.org


Created an attachment (id=124077)
 --> (https://bugs.webkit.org/attachment.cgi?id=124077&action=review)
Repro

Chromium:       http://code.google.com/p/chromium/issues/detail?id=111461
id:             chrome.dll!WebCore::CSSStyleDeclaration::diff ReadAV at NULL (e659be0a7f97fe3167c83ab4966701f9)
description:    Attempt to read from unallocated NULL pointer in chrome.dll!WebCore::CSSStyleDeclaration::diff
application:    Chromium 18.0.1006.0
stack:          chrome.dll!WebCore::CSSStyleDeclaration::diff
                chrome.dll!WebCore::getPropertiesNotIn
                chrome.dll!WebCore::StyleChange::StyleChange
                chrome.dll!WebCore::ApplyStyleCommand::applyBlockStyle
                chrome.dll!WebCore::ApplyStyleCommand::doApply
                chrome.dll!WebCore::CompositeEditCommand::apply
                chrome.dll!WebCore::applyCommand
                chrome.dll!WebCore::Editor::applyParagraphStyle
                chrome.dll!WebCore::executeApplyParagraphStyle
                chrome.dll!WebCore::executeJustifyRight
                chrome.dll!WebCore::Editor::Command::execute
                chrome.dll!WebCore::Document::execCommand
                chrome.dll!WebCore::DocumentInternal::execCommandCallback

Repro:
<script>
  window.onload=function(){
    document.designMode="on";
    document.execCommand("SelectAll");
    document.writeln("\x3CC\x3E");
    getSelection().modify("extend","backward","documentboundary");
    document.execCommand("indent",false);
    document.firstChild.hidden = true;
    document.execCommand("JustifyRight");
  }
</script>

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