<?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>64874</bug_id>
          
          <creation_ts>2011-07-20 08:19:25 -0700</creation_ts>
          <short_desc>REGRESSION (r91332): css3/images/optimize-contrast-canvas.html crashes</short_desc>
          <delta_ts>2011-07-21 13:24:50 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>Canvas</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>InRadar, Regression</keywords>
          <priority>P1</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Ryosuke Niwa">rniwa</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>aroben</cc>
    
    <cc>kbr</cc>
    
    <cc>mdelaney7</cc>
    
    <cc>mikelawther</cc>
    
    <cc>senorblanco</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>vangelis</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>439819</commentid>
    <comment_count>0</comment_count>
    <who name="Ryosuke Niwa">rniwa</who>
    <bug_when>2011-07-20 08:19:25 -0700</bug_when>
    <thetext>css3/images/optimize-contrast-canvas.html started crashing on Chromium Mac Debug after this patch (both 10.5 and 10.6):

http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=css3%2Fimages%2Foptimize-contrast-canvas.html&amp;showExpectations=true</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>440247</commentid>
    <comment_count>1</comment_count>
    <who name="Kenneth Russell">kbr</who>
    <bug_when>2011-07-20 21:42:06 -0700</bug_when>
    <thetext>These crashes look bad; they are occurring in random locations that would be indicative of heap corruption. I would suggest rolling out r91332 and see if the crashes reliably go away.

On 10.5:

Thread 0 Crashed:
0   DumpRenderTree                	0x009214fe v8::internal::HeapObject::map_word() + 10
1   DumpRenderTree                	0x00921525 v8::internal::HeapObject::map() + 17
2   DumpRenderTree                	0x00923969 v8::internal::HeapObject::GetHeap() + 73
3   DumpRenderTree                	0x00a7ae03 v8::internal::HeapObject::HeapObjectShortPrint(v8::internal::StringStream*) + 27
4   DumpRenderTree                	0x00a7b8d2 v8::internal::Object::ShortPrint(v8::internal::StringStream*) + 124
5   DumpRenderTree                	0x00b514cd v8::internal::StringStream::PrintObject(v8::internal::Object*) + 31
6   DumpRenderTree                	0x00b50f9e v8::internal::StringStream::Add(v8::internal::Vector&lt;char const&gt;, v8::internal::Vector&lt;v8::internal::FmtElm&gt;) + 1076
7   DumpRenderTree                	0x00b51432 v8::internal::StringStream::Add(char const*, v8::internal::FmtElm, v8::internal::FmtElm) + 126
8   DumpRenderTree                	0x0099d976 v8::internal::JavaScriptFrame::Print(v8::internal::StringStream*, v8::internal::StackFrame::PrintMode, int) const + 2186
9   DumpRenderTree                	0x00b5e43c __ZN2v88internalL11PrintFramesEPNS0_12StringStreamENS0_10StackFrame9PrintModeE + 84
10  DumpRenderTree                	0x00b5f41e v8::internal::Isolate::PrintStack(v8::internal::StringStream*) + 232
11  DumpRenderTree                	0x00b5f4db v8::internal::Isolate::PrintStack() + 139
12  DumpRenderTree                	0x00950e4a V8_Fatal + 188
13  DumpRenderTree                	0x00b618ee __ZL11CheckHelperPKciS0_b + 74
14  DumpRenderTree                	0x00b6276c v8::internal::TypeFeedbackOracle::SetInfo(unsigned int, v8::internal::Object*) + 78
15  DumpRenderTree                	0x00b629e6 v8::internal::TypeFeedbackOracle::PopulateMap(v8::internal::Handle&lt;v8::internal::Code&gt;) + 480
16  DumpRenderTree                	0x00b62be1 v8::internal::TypeFeedbackOracle::TypeFeedbackOracle(v8::internal::Handle&lt;v8::internal::Code&gt;, v8::internal::Handle&lt;v8::internal::Context&gt;) + 75
17  DumpRenderTree                	0x00957b1c __ZN2v88internalL18MakeCrankshaftCodeEPNS0_15CompilationInfoE + 1528
18  DumpRenderTree                	0x00957fad __ZN2v88internalL8MakeCodeEPNS0_15CompilationInfoE + 131
19  DumpRenderTree                	0x0095811f v8::internal::Compiler::CompileLazy(v8::internal::CompilationInfo*) + 327
20  DumpRenderTree                	0x009a9f48 __ZN2v88internalL17CompileLazyHelperEPNS0_15CompilationInfoENS0_18ClearExceptionFlagE + 168
21  DumpRenderTree                	0x009a9fe4 v8::internal::CompileOptimized(v8::internal::Handle&lt;v8::internal::JSFunction&gt;, int, v8::internal::ClearExceptionFlag) + 60
22  DumpRenderTree                	0x00b04886 v8::internal::Runtime_LazyRecompile(v8::internal::Arguments, v8::internal::Isolate*) + 480
23  ???                           	0x0664e0d6 0 + 107274454
24  ???                           	0x0665f07c 0 + 107343996
25  ???                           	0x1e5214ec 0 + 508695788
26  ???                           	0x06665d13 0 + 107371795
27  ???                           	0x1c8e57dc 0 + 479090652
28  ???                           	0x0664f47f 0 + 107279487
29  ???                           	0x1c8ef69b 0 + 479131291
30  ???                           	0x1c8e925c 0 + 479105628
31  ???                           	0x06655fa2 0 + 107306914
32  ???                           	0x0665efd6 0 + 107343830
33  ???                           	0x0664fa62 0 + 107280994
34  DumpRenderTree                	0x00980733 __ZN2v88internalL6InvokeEbNS0_6HandleINS0_10JSFunctionEEENS1_INS0_6ObjectEEEiPPPS4_Pb + 483
35  DumpRenderTree                	0x00980d81 v8::internal::Execution::Call(v8::internal::Handle&lt;v8::internal::JSFunction&gt;, v8::internal::Handle&lt;v8::internal::Object&gt;, int, v8::internal::Object***, bool*) + 53
36  DumpRenderTree                	0x00920001 v8::Script::Run() + 579
37  DumpRenderTree                	0x00ec52c3 WebCore::V8Proxy::runScript(v8::Handle&lt;v8::Script&gt;, bool) + 467
38  DumpRenderTree                	0x00ec5674 WebCore::V8Proxy::evaluate(WebCore::ScriptSourceCode const&amp;, WebCore::Node*) + 596
39  DumpRenderTree                	0x00e99942 WebCore::ScriptController::evaluate(WebCore::ScriptSourceCode const&amp;) + 216
40  DumpRenderTree                	0x010a335d WebCore::ScriptElement::executeScript(WebCore::ScriptSourceCode const&amp;) + 427
41  DumpRenderTree                	0x010a4369 WebCore::ScriptElement::prepareScript(WTF::TextPosition&lt;WTF::OneBasedNumber&gt; const&amp;, WebCore::ScriptElement::LegacyTypeSupport) + 1589
42  DumpRenderTree                	0x002800e0 WebCore::HTMLScriptRunner::runScript(WebCore::Element*, WTF::TextPosition&lt;WTF::OneBasedNumber&gt; const&amp;) + 344
43  DumpRenderTree                	0x00280d4f WebCore::HTMLScriptRunner::execute(WTF::PassRefPtr&lt;WebCore::Element&gt;, WTF::TextPosition&lt;WTF::OneBasedNumber&gt; const&amp;) + 155
44  DumpRenderTree                	0x002738aa WebCore::HTMLDocumentParser::runScriptsForPausedTreeBuilder() + 282
45  DumpRenderTree                	0x00273959 WebCore::HTMLDocumentParser::canTakeNextToken(WebCore::HTMLDocumentParser::SynchronousMode, WebCore::PumpSession&amp;) + 139
46  DumpRenderTree                	0x00273fe6 WebCore::HTMLDocumentParser::pumpTokenizer(WebCore::HTMLDocumentParser::SynchronousMode) + 650
47  DumpRenderTree                	0x002742de WebCore::HTMLDocumentParser::pumpTokenizerIfPossible(WebCore::HTMLDocumentParser::SynchronousMode) + 180
48  DumpRenderTree                	0x002748a6 WebCore::HTMLDocumentParser::append(WebCore::SegmentedString const&amp;) + 302
49  DumpRenderTree                	0x01013670 WebCore::DecodedDataDocumentParser::appendBytes(WebCore::DocumentWriter*, char const*, int, bool) + 210
50  DumpRenderTree                	0x0120b203 WebCore::DocumentWriter::addData(char const*, int, bool) + 109
51  DumpRenderTree                	0x0120b290 WebCore::DocumentWriter::endIfNotLoadingMainResource() + 138
52  DumpRenderTree                	0x0120b2d8 WebCore::DocumentWriter::end() + 38
53  DumpRenderTree                	0x012017c9 WebCore::DocumentLoader::finishedLoading() + 81
54  DumpRenderTree                	0x0121babc WebCore::FrameLoader::finishedLoading() + 72
55  DumpRenderTree                	0x0122ac02 WebCore::MainResourceLoader::didFinishLoading(double) + 338
56  DumpRenderTree                	0x0123d343 WebCore::ResourceLoader::didFinishLoading(WebCore::ResourceHandle*, double) + 47
57  DumpRenderTree                	0x0007dc03 WebCore::ResourceHandleInternal::didFinishLoading(WebKit::WebURLLoader*, double) + 221
58  DumpRenderTree                	0x01bbd953 webkit_glue::WebURLLoaderImpl::Context::OnCompletedRequest(net::URLRequestStatus const&amp;, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; const&amp;, base::Time const&amp;) + 669
59  DumpRenderTree                	0x01be840b (anonymous namespace)::RequestProxy::NotifyCompletedRequest(net::URLRequestStatus const&amp;, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; const&amp;, base::Time const&amp;) + 61
60  DumpRenderTree                	0x01be8887 void DispatchToMethod&lt;(anonymous namespace)::RequestProxy, void ((anonymous namespace)::RequestProxy::*)(net::URLRequestStatus const&amp;, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; const&amp;, base::Time const&amp;), net::URLRequestStatus, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;, base::Time&gt;((anonymous namespace)::RequestProxy*, void ((anonymous namespace)::RequestProxy::*)(net::URLRequestStatus const&amp;, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; const&amp;, base::Time const&amp;), Tuple3&lt;net::URLRequestStatus, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;, base::Time&gt; const&amp;) + 93
61  DumpRenderTree                	0x01be88c2 RunnableMethod&lt;(anonymous namespace)::RequestProxy, void ((anonymous namespace)::RequestProxy::*)(net::URLRequestStatus const&amp;, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; const&amp;, base::Time const&amp;), Tuple3&lt;net::URLRequestStatus, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;, base::Time&gt; &gt;::Run() + 52
62  DumpRenderTree                	0x005e1c58 MessageLoop::RunTask(Task*) + 312
63  DumpRenderTree                	0x005e1deb MessageLoop::DeferOrRunPendingTask(MessageLoop::PendingTask const&amp;) + 53
64  DumpRenderTree                	0x005e2699 MessageLoop::DoWork() + 253
65  DumpRenderTree                	0x005a9d11 base::MessagePumpCFRunLoopBase::RunWork() + 77
66  DumpRenderTree                	0x005a9e89 base::MessagePumpCFRunLoopBase::RunWorkSource(void*) + 23
67  com.apple.CoreFoundation      	0x912e23c5 CFRunLoopRunSpecific + 3141
68  com.apple.CoreFoundation      	0x912e2aa8 CFRunLoopRunInMode + 88
69  com.apple.HIToolbox           	0x90f4a2ac RunCurrentEventLoopInMode + 283
70  com.apple.HIToolbox           	0x90f4a0c5 ReceiveNextEventCommon + 374
71  com.apple.HIToolbox           	0x90f49f39 BlockUntilNextEventMatchingListInMode + 106
72  com.apple.AppKit              	0x91c946d5 _DPSNextEvent + 657
73  com.apple.AppKit              	0x91c93f88 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 128
74  com.apple.AppKit              	0x91c8cf9f -[NSApplication run] + 795
75  DumpRenderTree                	0x005a97fa base::MessagePumpNSApplication::DoRun(base::MessagePump::Delegate*) + 256
76  DumpRenderTree                	0x005a9b3b base::MessagePumpCFRunLoopBase::Run(base::MessagePump::Delegate*) + 143
77  DumpRenderTree                	0x005e2990 MessageLoop::RunInternal() + 200
78  DumpRenderTree                	0x005e29ab MessageLoop::RunHandler() + 17
79  DumpRenderTree                	0x005e2a0f MessageLoop::Run() + 35
80  DumpRenderTree                	0x001af17b webkit_support::RunMessageLoop() + 19
81  DumpRenderTree                	0x0003d7cb TestShell::waitTestFinished() + 343 (TestShellMac.mm:121)
82  DumpRenderTree                	0x00038638 TestShell::runFileTest(TestParams const&amp;) + 654 (TestShell.cpp:215)
83  DumpRenderTree                	0x000120b8 __ZL7runTestR9TestShellR10TestParamsRKSsb + 958
84  DumpRenderTree                	0x00012852 main + 1910 (DumpRenderTree.cpp:224)
85  DumpRenderTree                	0x00002b76 start + 54


On 10.6:

Thread 5 Crashed:  IOThread
0   libSystem.B.dylib             	0x928854ee __semwait_signal_nocancel + 10
1   libSystem.B.dylib             	0x928853d2 nanosleep$NOCANCEL$UNIX2003 + 166
2   libSystem.B.dylib             	0x929002a6 usleep$NOCANCEL$UNIX2003 + 61
3   libSystem.B.dylib             	0x92921959 __abort + 136
4   libSystem.B.dylib             	0x929219c9 abort_report_np + 0
5   libstdc++.6.dylib             	0x900a0fda __gnu_cxx::__verbose_terminate_handler() + 433
6   libstdc++.6.dylib             	0x9009f17a __cxxabiv1::__terminate(void (*)()) + 10
7   libstdc++.6.dylib             	0x9009f1ba __cxxabiv1::__unexpected(void (*)()) + 0
8   libstdc++.6.dylib             	0x9009f2b8 __gxx_exception_cleanup(_Unwind_Reason_Code, _Unwind_Exception*) + 0
9   libstdc++.6.dylib             	0x9005b856 std::__throw_logic_error(char const*) + 158
10  libstdc++.6.dylib             	0x90086ced char* std::string::_S_construct&lt;char const*&gt;(char const*, char const*, std::allocator&lt;char&gt; const&amp;, std::forward_iterator_tag) + 57
11  libstdc++.6.dylib             	0x90086d85 std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;::basic_string(char const*, unsigned long, std::allocator&lt;char&gt; const&amp;) + 37
12  DumpRenderTree                	0x679d95a6 GURL::GURL(char const*, unsigned long, url_parse::Parsed const&amp;, bool) + 136
13  DumpRenderTree                	0x6734180b WebKit::WebURL::operator GURL() const + 147 (WebURL.h:132)
14  DumpRenderTree                	0x69da1bbd void DispatchToMethod&lt;TestShellWebBlobRegistryImpl, void (TestShellWebBlobRegistryImpl::*)(GURL const&amp;), WebKit::WebURL&gt;(TestShellWebBlobRegistryImpl*, void (TestShellWebBlobRegistryImpl::*)(GURL const&amp;), Tuple1&lt;WebKit::WebURL&gt; const&amp;) + 111
15  DumpRenderTree                	0x69da1c4f RunnableMethod&lt;TestShellWebBlobRegistryImpl, void (TestShellWebBlobRegistryImpl::*)(GURL const&amp;), Tuple1&lt;WebKit::WebURL&gt; &gt;::Run() + 85
16  DumpRenderTree                	0x67a53162 (anonymous namespace)::TaskClosureAdapter::Run() + 58
17  DumpRenderTree                	0x67a53834 base::internal::Invoker1&lt;false, base::internal::InvokerStorage1&lt;void ((anonymous namespace)::TaskClosureAdapter::*)(), (anonymous namespace)::TaskClosureAdapter*&gt;, void ((anonymous namespace)::TaskClosureAdapter::*)()&gt;::DoInvoke(base::internal::InvokerStorageBase*) + 122
18  DumpRenderTree                	0x67a58b2c base::Callback&lt;void ()()&gt;::Run() const + 62
19  DumpRenderTree                	0x67a54d65 MessageLoop::RunTask(MessageLoop::PendingTask const&amp;) + 413
20  DumpRenderTree                	0x67a54ef9 MessageLoop::DeferOrRunPendingTask(MessageLoop::PendingTask const&amp;) + 85
21  DumpRenderTree                	0x67a55235 MessageLoop::DoWork() + 271
22  DumpRenderTree                	0x679f7a9b base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) + 339
23  DumpRenderTree                	0x67a564bb MessageLoop::RunInternal() + 245
24  DumpRenderTree                	0x67a56505 MessageLoop::RunHandler() + 45
25  DumpRenderTree                	0x67a565d1 MessageLoop::Run() + 63
26  DumpRenderTree                	0x67acaf75 base::Thread::Run(MessageLoop*) + 51
27  DumpRenderTree                	0x67acadd5 base::Thread::ThreadMain() + 337
28  DumpRenderTree                	0x67acaad9 base::(anonymous namespace)::ThreadFunc(void*) + 103
29  libSystem.B.dylib             	0x928457fd _pthread_start + 345
30  libSystem.B.dylib             	0x92845682 thread_start + 34</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>440284</commentid>
    <comment_count>2</comment_count>
    <who name="Mike Lawther">mikelawther</who>
    <bug_when>2011-07-20 23:05:52 -0700</bug_when>
    <thetext>r91332 was rolled out in bug 64925.

Here is a crash log from Safari Mac (with WebKit built using --debug) when running LayoutTests/css3/images/optimize-contrast-canvas.html: 


ASSERTION FAILED: !useLowQualityScale
/Volumes/development/src/chromium-webkit/src/third_party/WebKit/Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp(216) : void WebCore::ImageBuffer::draw(WebCore::GraphicsContext*, WebCore::ColorSpace, const WebCore::FloatRect&amp;, const WebCore::FloatRect&amp;, WebCore::CompositeOperator, bool)
1   WebCore::ImageBuffer::draw(WebCore::GraphicsContext*, WebCore::ColorSpace, WebCore::FloatRect const&amp;, WebCore::FloatRect const&amp;, WebCore::CompositeOperator, bool)
2   WebCore::GraphicsContext::drawImageBuffer(WebCore::ImageBuffer*, WebCore::ColorSpace, WebCore::FloatRect const&amp;, WebCore::FloatRect const&amp;, WebCore::CompositeOperator, bool)
3   WebCore::GraphicsContext::drawImageBuffer(WebCore::ImageBuffer*, WebCore::ColorSpace, WebCore::IntRect const&amp;, WebCore::IntRect const&amp;, WebCore::CompositeOperator, bool)
4   WebCore::GraphicsContext::drawImageBuffer(WebCore::ImageBuffer*, WebCore::ColorSpace, WebCore::IntRect const&amp;, WebCore::CompositeOperator, bool)
5   WebCore::HTMLCanvasElement::paint(WebCore::GraphicsContext*, WebCore::IntRect const&amp;, bool)
6   WebCore::RenderHTMLCanvas::paintReplaced(WebCore::PaintInfo&amp;, WebCore::IntPoint const&amp;)
7   WebCore::RenderReplaced::paint(WebCore::PaintInfo&amp;, WebCore::IntPoint const&amp;)
8   WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&amp;, unsigned int, WebCore::RenderObject*, WTF::HashMap&lt;WebCore::OverlapTestRequestClient*, WebCore::IntRect, WTF::PtrHash&lt;WebCore::OverlapTestRequestClient*&gt;, WTF::HashTraits&lt;WebCore::OverlapTestRequestClient*&gt;, WTF::HashTraits&lt;WebCore::IntRect&gt; &gt;*, unsigned int)
9   WebCore::RenderLayer::paintList(WTF::Vector&lt;WebCore::RenderLayer*, 0ul&gt;*, WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&amp;, unsigned int, WebCore::RenderObject*, WTF::HashMap&lt;WebCore::OverlapTestRequestClient*, WebCore::IntRect, WTF::PtrHash&lt;WebCore::OverlapTestRequestClient*&gt;, WTF::HashTraits&lt;WebCore::OverlapTestRequestClient*&gt;, WTF::HashTraits&lt;WebCore::IntRect&gt; &gt;*, unsigned int)
10  WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&amp;, unsigned int, WebCore::RenderObject*, WTF::HashMap&lt;WebCore::OverlapTestRequestClient*, WebCore::IntRect, WTF::PtrHash&lt;WebCore::OverlapTestRequestClient*&gt;, WTF::HashTraits&lt;WebCore::OverlapTestRequestClient*&gt;, WTF::HashTraits&lt;WebCore::IntRect&gt; &gt;*, unsigned int)
11  WebCore::RenderLayer::paintList(WTF::Vector&lt;WebCore::RenderLayer*, 0ul&gt;*, WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&amp;, unsigned int, WebCore::RenderObject*, WTF::HashMap&lt;WebCore::OverlapTestRequestClient*, WebCore::IntRect, WTF::PtrHash&lt;WebCore::OverlapTestRequestClient*&gt;, WTF::HashTraits&lt;WebCore::OverlapTestRequestClient*&gt;, WTF::HashTraits&lt;WebCore::IntRect&gt; &gt;*, unsigned int)
12  WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&amp;, unsigned int, WebCore::RenderObject*, WTF::HashMap&lt;WebCore::OverlapTestRequestClient*, WebCore::IntRect, WTF::PtrHash&lt;WebCore::OverlapTestRequestClient*&gt;, WTF::HashTraits&lt;WebCore::OverlapTestRequestClient*&gt;, WTF::HashTraits&lt;WebCore::IntRect&gt; &gt;*, unsigned int)
13  WebCore::RenderLayer::paint(WebCore::GraphicsContext*, WebCore::IntRect const&amp;, unsigned int, WebCore::RenderObject*)
14  WebCore::FrameView::paintContents(WebCore::GraphicsContext*, WebCore::IntRect const&amp;)
15  -[WebFrame(WebInternal) _drawRect:contentsOnly:]
16  -[WebHTMLView drawSingleRect:]
17  -[WebHTMLView drawRect:]
18  -[NSView _drawRect:clip:]
19  -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:]
20  -[WebHTMLView(WebPrivate) _recursiveDisplayAllDirtyWithLockFocus:visRect:]
21  -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:]
22  -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:]
23  -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:]
24  -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:]
25  -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:]
26  -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:]
27  -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
28  -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
29  -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
30  -[NSThemeFrame _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
31  -[NSView _displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:]</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>440473</commentid>
    <comment_count>3</comment_count>
    <who name="Adam Roben (:aroben)">aroben</who>
    <bug_when>2011-07-21 10:22:39 -0700</bug_when>
    <thetext>It&apos;s also failing assertions on SnowLeopard and timing out on Windows.

http://build.webkit.org/results/Windows%20XP%20Debug%20(Tests)/r91332%20(30794)/results.html
http://build.webkit.org/results/SnowLeopard%20Intel%20Leaks/r91332%20(18159)/css3/images/optimize-contrast-canvas-crash-log.txt</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>440474</commentid>
    <comment_count>4</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2011-07-21 10:22:54 -0700</bug_when>
    <thetext>&lt;rdar://problem/9815912&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>440616</commentid>
    <comment_count>5</comment_count>
    <who name="Ryosuke Niwa">rniwa</who>
    <bug_when>2011-07-21 13:24:50 -0700</bug_when>
    <thetext>The r91332 was rolled out in http://trac.webkit.org/changeset/91446/.</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>