[Webkit-unassigned] [Bug 56642] Null pointer crash in StyleChange::init inside an empty document

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=56642


Ryosuke Niwa <rniwa at webkit.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ap at webkit.org,
                   |                            |darin at apple.com,
                   |                            |hyatt at apple.com,
                   |                            |ojan at chromium.org,
                   |                            |simon.fraser at apple.com




--- Comment #4 from Ryosuke Niwa <rniwa at webkit.org>  2011-03-18 16:34:02 PST ---
I'm now running into the assertion in:

void Document::setCompatibilityMode(CompatibilityMode mode)
{
    if (m_compatibilityModeLocked || mode == m_compatibilityMode)
        return;
    ASSERT(!documentElement() && !m_styleSheets->length());
    bool wasInQuirksMode = inQuirksMode();
    m_compatibilityMode = mode;
    if (inQuirksMode() != wasInQuirksMode) {
        // All user stylesheets have to reparse using the different mode.
        clearPageUserSheet();
        clearPageGroupUserSheets();
    }
}

Maybe we shouldn't even let execCommand run when there's no body element.

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