[Webkit-unassigned] [Bug 39621] Extreme memory growth on DOM Hanoi test

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=39621





--- Comment #1 from Alexey Proskuryakov <ap at webkit.org>  2010-05-24 14:54:02 PST ---
One thing I'm seeing is the same as <https://bugs.webkit.org/show_bug.cgi?id=9880> - we just added a notification that's sent to the client when form controls change:
HTMLTextAreaElement::HTMLTextAreaElement(const QualifiedName& tagName, Document* document, HTMLFormElement* form)
<...>
{
    ASSERT(hasTagName(textareaTag));
    setFormControlValueMatchesRenderer(true);
    notifyFormStateChanged(this);  // <-- here an ObjC wrapper for the node is created and autoreleased
}

It's more tricky to fix, because HTML elements start with refcount zero, so draining the autorelease pool would destroy HTMLTextAreaElement - during its own constructor!

The offending notifyFormStateChanged() call was added in <http://trac.webkit.org/changeset/39152>. It's only present for HTMLTextArea, which makes me wonder if it's actually needed.

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