[Webkit-unassigned] [Bug 77786] New: NULL ptr in WebCore::RenderBlock::layoutRunsAndFloatsInRange

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=77786

           Summary: NULL ptr in
                    WebCore::RenderBlock::layoutRunsAndFloatsInRange
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Windows Vista
            Status: NEW
          Severity: Normal
          Priority: P1
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: skylined at chromium.org
                CC: eric at webkit.org


Created an attachment (id=125424)
 --> (https://bugs.webkit.org/attachment.cgi?id=125424&action=review)
Repro

Chromium: http://code.google.com/p/chromium/issues/detail?id=112660

Fuzzer: Cris_happyfuntime

  - crash stack -
  WebCore::RenderBlock::layoutRunsAndFloatsInRange
  WebCore::RenderBlock::layoutRunsAndFloats
  WebCore::RenderBlock::layoutInlineChildren

Repro:
<!>
<style>
.class2{float:right}
b{border-style:double}
</style>
<script>
  window.onload = function(){
    document.designMode="on";document.execCommand("SelectAll");
    document.execCommand("InsertUnorderedList");
  }
</script>
<p ><svg:font ></svg:font><bdi ><b class="class2">

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