<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>95927</bug_id>
          
          <creation_ts>2012-09-05 20:01:43 -0700</creation_ts>
          <short_desc>[CSS Regions] Layout Test fast/regions/flows-dependency-dynamic-remove.html and fast/regions/flows-dependency-same-flow.html are crashing</short_desc>
          <delta_ts>2012-11-28 09:38:33 -0800</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>Tools / Tests</component>
          <version>528+ (Nightly build)</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>AdobeTracked</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          <blocked>57312</blocked>
          <everconfirmed>1</everconfirmed>
          <reporter name="Kenichi Ishibashi">bashi</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>jchaffraix</cc>
    
    <cc>mibalan</cc>
    
    <cc>mihnea</cc>
    
    <cc>WebkitBugTracker</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>712800</commentid>
    <comment_count>0</comment_count>
    <who name="Kenichi Ishibashi">bashi</who>
    <bug_when>2012-09-05 20:01:43 -0700</bug_when>
    <thetext>The following layout test is crashing on Chromium mac

fast/regions/flows-dependency-dynamic-remove.html
fast/regions/flows-dependency-same-flow.html

Please check http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=fast%2Fregions%2Fflows-dependency-dynamic-remove.html%20fast%2Fregions%2Fflows-dependency-same-flow.html

Probable cause:
http://trac.webkit.org/changeset/127596

I can reproduce the crash with NRWT, but couldn&apos;t when I use DRT directly. Here is a crash log. It seems there is a condition which cause a stack overflow.

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   DumpRenderTree                	0x00640e4b WebCore::RenderBlock::computePreferredLogicalWidths() + 11
1   DumpRenderTree                	0x006cb2c2 WebCore::RenderBox::minPreferredLogicalWidth() const + 82
2   DumpRenderTree                	0x00870b49 WebCore::RenderRegion::minPreferredLogicalWidth() const + 137
3   DumpRenderTree                	0x00642dc1 WebCore::RenderBlock::computeBlockPreferredLogicalWidths() + 1265
4   DumpRenderTree                	0x006411d5 WebCore::RenderBlock::computePreferredLogicalWidths() + 917
5   DumpRenderTree                	0x006cb2c2 WebCore::RenderBox::minPreferredLogicalWidth() const + 82
6   DumpRenderTree                	0x00642dc1 WebCore::RenderBlock::computeBlockPreferredLogicalWidths() + 1265
7   DumpRenderTree                	0x006411d5 WebCore::RenderBlock::computePreferredLogicalWidths() + 917
8   DumpRenderTree                	0x006cb2c2 WebCore::RenderBox::minPreferredLogicalWidth() const + 82
9   DumpRenderTree                	0x00870b49 WebCore::RenderRegion::minPreferredLogicalWidth() const + 137
10  DumpRenderTree                	0x00642dc1 WebCore::RenderBlock::computeBlockPreferredLogicalWidths() + 1265
11  DumpRenderTree                	0x006411d5 WebCore::RenderBlock::computePreferredLogicalWidths() + 917
12  DumpRenderTree                	0x006cb2c2 WebCore::RenderBox::minPreferredLogicalWidth() const + 82
13  DumpRenderTree                	0x00642dc1 WebCore::RenderBlock::computeBlockPreferredLogicalWidths() + 1265
14  DumpRenderTree                	0x006411d5 WebCore::RenderBlock::computePreferredLogicalWidths() + 917
15  DumpRenderTree                	0x006cb2c2 WebCore::RenderBox::minPreferredLogicalWidth() const + 82
16  DumpRenderTree                	0x00870b49 WebCore::RenderRegion::minPreferredLogicalWidth() const + 137
17  DumpRenderTree                	0x00642dc1 WebCore::RenderBlock::computeBlockPreferredLogicalWidths() + 1265
18  DumpRenderTree                	0x006411d5 WebCore::RenderBlock::computePreferredLogicalWidths() + 917
19  DumpRenderTree                	0x006cb2c2 WebCore::RenderBox::minPreferredLogicalWidth() const + 82

....</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>777986</commentid>
    <comment_count>1</comment_count>
    <who name="Mihnea Ovidenie">mihnea</who>
    <bug_when>2012-11-28 09:38:33 -0800</bug_when>
    <thetext>This was fixed with the new version of the patch for 74135, which landed in http://trac.webkit.org/changeset/128155.</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>