Bug 77078 – chrome.dll!WebCore::CSSStyleDeclaration::diff ReadAV@NULL (e659be0a7f97fe3167c83ab4966701f9)

• Component: HTML Editing
• Status: RESOLVED FIXED

[Berend-Jan Wever]

Created attachment 124077 [details]
Repro

Chromium:       http://code.google.com/p/chromium/issues/detail?id=111461
id:             chrome.dll!WebCore::CSSStyleDeclaration::diff ReadAV@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>

Could not reproduce on
 Win7 27.0.1453.110 (Official Build 202711) m

Some patches so far fixed this.