Reviewed by Sam Weinig.

        OOB read with svg polyline
        https://bugs.webkit.org/show_bug.cgi?id=45279

        In principle, attributeChanged can do anything.  If we supported more
        DOM mutation events, it could even run JavaScript.  That means we need
        to be prepared for the attribute map to change when running
        attributeChanged.  This patch makes this loop resilient to the
        attribute map changing by storing the list of changed attributes on the
        stack.

        Test: fast/parser/changing-attrbutes-crash.html

        * dom/Element.cpp:
        (WebCore::Element::setAttributeMap):
2010-09-06  Adam Barth  <abarth@webkit.org>

        Reviewed by Sam Weinig.

        OOB read with svg polyline
        https://bugs.webkit.org/show_bug.cgi?id=45279

        Test what happens when SVG changes the attribute map out from under us.

        * fast/parser/changing-attrbutes-crash-expected.txt: Added.
        * fast/parser/changing-attrbutes-crash.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@66862 268f45cc-cd09-0410-ab3c-d52691b4dbfc