[Webkit-unassigned] [Bug 35014] New: Modifying UA rules from page JS crashes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=35014

           Summary: Modifying UA rules from page JS crashes
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Critical
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: bzbarsky at mit.edu


STEPS TO REPRODUCE:
1)  Start Safari.
2)  Load about:blank (or really, any page of your choice)
3)  Type :

  javascript:window.getMatchedCSSRules(document.body, "",
false)[0].style.marginTop="200px";void(0);

    into the url bar.
4)  Hit enter.

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