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      <base href="https://bugs.webkit.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - REGRESSION (r199054): CrashTracer: [USER] parseWebKit at WebCore: WebCore::RenderBlockFlow::checkFloatsInCleanLine + 107"
   href="https://bugs.webkit.org/show_bug.cgi?id=159519">159519</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>REGRESSION (r199054): CrashTracer: [USER] parseWebKit at WebCore: WebCore::RenderBlockFlow::checkFloatsInCleanLine + 107
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Layout and Rendering
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>koivisto&#64;iki.fi
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>simon.fraser&#64;apple.com
          </td>
        </tr></table>
      <p>
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        <pre><span class="quote">&gt;  1 com.apple.WebCore              0x00d22b2b WebCore::RenderBlockFlow::checkFloatsInCleanLine(WebCore::RootInlineBox*, WTF::Vector&lt;WebCore::FloatWithRect, 0ul, WTF::CrashOnOverflow, 16ul&gt;&amp;, unsigned long&amp;, bool&amp;, bool&amp;) + 107</span >
   2 com.apple.WebCore              0x00d1efd4 WebCore::RenderBlockFlow::determineEndPosition(WebCore::LineLayoutState&amp;, WebCore::RootInlineBox*, WebCore::InlineIterator&amp;, WebCore::BidiStatus&amp;) + 116
   3 com.apple.WebCore              0x00d1d7a1 WebCore::RenderBlockFlow::layoutRunsAndFloats(WebCore::LineLayoutState&amp;, bool) + 961
   4 com.apple.WebCore              0x00d221a5 WebCore::RenderBlockFlow::layoutLineBoxes(bool, WebCore::LayoutUnit&amp;, WebCore::LayoutUnit&amp;) + 1845
   5 com.apple.WebCore              0x00d0cf49 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) + 905
   6 com.apple.WebCore              0x00060386 WebCore::RenderBlock::layout() + 54
   7 com.apple.WebCore              0x00d0ed33 WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&amp;, WebCore::RenderBlockFlow::MarginInfo&amp;, WebCore::LayoutUnit&amp;, WebCore::LayoutUnit&amp;) + 899
   8 com.apple.WebCore              0x00d0dc3c WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&amp;) + 524
   9 com.apple.WebCore              0x00d0cf31 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) + 881
  10 com.apple.WebCore              0x00060386 WebCore::RenderBlock::layout() + 54
  11 com.apple.WebCore              0x00d0e895 WebCore::RenderBlockFlow::insertFloatingObject(WebCore::RenderBox&amp;) + 325
  12 com.apple.WebCore              0x00bd8512 WebCore::LineBreaker::skipLeadingWhitespace(WebCore::BidiResolverWithIsolate&lt;WebCore::InlineIterator, WebCore::BidiRun, WebCore::BidiIsolatedRun&gt;&amp;, WebCore::LineInfo&amp;, WebCore::FloatingObject*, WebCore::LineWidth&amp;) + 226
  13 com.apple.WebCore              0x00bd87f7 WebCore::LineBreaker::nextLineBreak(WebCore::BidiResolverWithIsolate&lt;WebCore::InlineIterator, WebCore::BidiRun, WebCore::BidiIsolatedRun&gt;&amp;, WebCore::LineInfo&amp;, WebCore::LineLayoutState&amp;, WebCore::RenderTextInfo&amp;, WebCore::FloatingObject*, unsigned int, WTF::Vector&lt;WebCore::WordMeasurement, 64ul, WTF::CrashOnOverflow, 16ul&gt;&amp;) + 231
  14 com.apple.WebCore              0x00d1f45e WebCore::RenderBlockFlow::layoutRunsAndFloatsInRange(WebCore::LineLayoutState&amp;, WebCore::BidiResolverWithIsolate&lt;WebCore::InlineIterator, WebCore::BidiRun, WebCore::BidiIsolatedRun&gt;&amp;, WebCore::InlineIterator const&amp;, WebCore::BidiStatus const&amp;, unsigned int) + 862
  15 com.apple.WebCore              0x00d1d8c8 WebCore::RenderBlockFlow::layoutRunsAndFloats(WebCore::LineLayoutState&amp;, bool) + 1256
  16 com.apple.WebCore              0x00d221a5 WebCore::RenderBlockFlow::layoutLineBoxes(bool, WebCore::LayoutUnit&amp;, WebCore::LayoutUnit&amp;) + 1845
  17 com.apple.WebCore              0x00d0cf49 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) + 905
  18 com.apple.WebCore              0x00060386 WebCore::RenderBlock::layout() + 54
  19 com.apple.WebCore              0x00d0ed33 WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&amp;, WebCore::RenderBlockFlow::MarginInfo&amp;, WebCore::LayoutUnit&amp;, WebCore::LayoutUnit&amp;) + 899
  20 com.apple.WebCore              0x00d0dc3c WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&amp;) + 524
  21 com.apple.WebCore              0x00d0cf31 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) + 881
  22 com.apple.WebCore              0x00060386 WebCore::RenderBlock::layout() + 54
  23 com.apple.WebCore              0x00d0e895 WebCore::RenderBlockFlow::insertFloatingObject(WebCore::RenderBox&amp;) + 325
  24 com.apple.WebCore              0x00d0dc46 WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&amp;) + 534
  25 com.apple.WebCore              0x00d0cf31 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) + 881
  26 com.apple.WebCore              0x00060386 WebCore::RenderBlock::layout() + 54
  27 com.apple.WebCore              0x00d0ed33 WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&amp;, WebCore::RenderBlockFlow::MarginInfo&amp;, WebCore::LayoutUnit&amp;, WebCore::LayoutUnit&amp;) + 899
  28 com.apple.WebCore              0x00d0dc3c WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&amp;) + 524
  29 com.apple.WebCore              0x00d0cf31 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) + 881
  30 com.apple.WebCore              0x00060386 WebCore::RenderBlock::layout() + 54
  31 com.apple.WebCore              0x000601fd WebCore::RenderView::layout() + 781
  32 com.apple.WebCore              0x0005d745 WebCore::FrameView::layout(bool) + 3045
  33 com.apple.WebCore              0x0005c40a WebCore::Document::implicitClose() + 874
  34 com.apple.WebCore              0x0005bc43 WebCore::FrameLoader::checkCompleted() + 275
  35 com.apple.WebCore              0x0005a99b WebCore::FrameLoader::finishedParsing() + 123
  36 com.apple.WebCore              0x000596e6 WebCore::Document::finishedParsing() + 390
  37 com.apple.WebCore              0x00033bc2 WebCore::HTMLDocumentParser::prepareToStopParsing() + 162
  38 com.apple.WebCore              0x0003297a WebCore::DocumentWriter::end() + 58
  39 com.apple.WebCore              0x0002476c WebCore::DocumentLoader::finishedLoading(double) + 268
  40 com.apple.WebCore              0x000b6229 WebCore::CachedResource::checkNotify() + 153
  41 com.apple.WebCore              0x0036be63 WebCore::CachedRawResource::finishLoading(WebCore::SharedBuffer*) + 227
  42 com.apple.WebCore              0x000b605b WebCore::SubresourceLoader::didFinishLoading(double) + 1163
  43 com.apple.WebCore              0x00e53ae5 std::__1::__function::__func&lt;WebCore::ResourceLoader::loadDataURL()::$_0, std::__1::allocator&lt;WebCore::ResourceLoader::loadDataURL()::$_0&gt;, void (WTF::Optional&lt;WebCore::DataURLDecoder::Result&gt;)&gt;::operator()(WTF::Optional&lt;WebCore::DataURLDecoder::Result&gt;&amp;&amp;) + 821
  44 com.apple.WebCore              0x00496452 WebCore::DataURLDecoder::DecodingResultDispatcher::timerFired() + 114
  45 com.apple.JavaScriptCore       0x00af80f3 WTF::timerFired(__CFRunLoopTimer*, void*) + 35
  46 com.apple.CoreFoundation       0x00092b94 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20 (/Library/Caches/com.apple.xbs/Sources/CF/CF-1258.1/RunLoop.subproj/CFRunLoop.c:1628)
  47 com.apple.CoreFoundation       0x00092823 __CFRunLoopDoTimer + 1075 (/Library/Caches/com.apple.xbs/Sources/CF/CF-1258.1/RunLoop.subproj/CFRunLoop.c:2167)
  48 com.apple.CoreFoundation       0x0009237a __CFRunLoopDoTimers + 298 (/Library/Caches/com.apple.xbs/Sources/CF/CF-1258.1/RunLoop.subproj/CFRunLoop.c:2306)
  49 com.apple.CoreFoundation       0x00089871 __CFRunLoopRun + 1841 (/Library/Caches/com.apple.xbs/Sources/CF/CF-1258.1/RunLoop.subproj/CFRunLoop.c:2688)
  50 com.apple.CoreFoundation       0x00088ed8 CFRunLoopRunSpecific + 296 (/Library/Caches/com.apple.xbs/Sources/CF/CF-1258.1/RunLoop.subproj/CFRunLoop.c:2814)
  51 com.apple.Foundation           0x00024ed9 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 270 (/Library/Caches/com.apple.xbs/Sources/Foundation/Foundation-1259/Soil.subproj/NSRunLoop.m:366)
  52 parseWebKit                    0x00002988 main + 4104
  53 libdyld.dylib                  0x000035ad start + 1 (/BuildRoot/Library/Caches/com.apple.xbs/Sources/libdyld/dyld-360.22/src/start_glue.s:47)</pre>
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