<?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>140519</bug_id>
          
          <creation_ts>2015-01-15 15:37:31 -0800</creation_ts>
          <short_desc>[Win] Failure in &apos;fast/flexbox/flexing-overflow-scroll-item.html&apos;</short_desc>
          <delta_ts>2015-01-15 15:39:34 -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>WebKit Misc.</component>
          <version>528+ (Nightly build)</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>NEW</bug_status>
          <resolution></resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords></keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Brent Fulgham">bfulgham</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1061664</commentid>
    <comment_count>0</comment_count>
    <who name="Brent Fulgham">bfulgham</who>
    <bug_when>2015-01-15 15:37:31 -0800</bug_when>
    <thetext>A debug assertion is being hit in &apos;fast/flexbox/flexing-overflow-scroll-item.html&apos;.

NoEventDispatchAssertion is asserting because the s_count value is zero.

The stack trace is as follows:

 	WTF.dll!WTFCrash() Line 321	C++
&gt;	WebKit.dll!WebCore::NoEventDispatchAssertion::~NoEventDispatchAssertion() Line 63	C++
 	[External Code]	
 	WebKit.dll!WTF::deleteOwnedPtr&lt;WebCore::NoEventDispatchAssertion&gt;(WebCore::NoEventDispatchAssertion * ptr) Line 37	C++
 	WebKit.dll!WTF::OwnPtr&lt;WebCore::NoEventDispatchAssertion&gt;::clear() Line 116	C++
 	WebKit.dll!WTF::OwnPtr&lt;WebCore::NoEventDispatchAssertion&gt;::operator=(void * __formal) Line 68	C++
 	WebKit.dll!WebCore::ElementIteratorAssertions::dropEventDispatchAssertion() Line 68	C++
 	WebKit.dll!WebCore::ElementIterator&lt;WebCore::Element&gt;::traverseNext() Line 123	C++
 	WebKit.dll!WebCore::TypedElementDescendantIterator&lt;WebCore::Element&gt;::operator++() Line 102	C++
 	WebKit.dll!WebCore::DocumentOrderedMap::getAllElementsById(const WTF::AtomicStringImpl &amp; key, const WebCore::TreeScope &amp; scope) Line 193	C++
 	WebKit.dll!WebCore::TreeScope::getAllElementsById(const WTF::AtomicString &amp; elementId) Line 128	C++
 	WebKit.dll!WebCore::SelectorDataList::executeFastPathForIdSelector&lt;WebCore::AllElementExtractorSelectorQueryTrait&gt;(const WebCore::ContainerNode &amp; rootNode, const WebCore::SelectorDataList::SelectorData &amp; selectorData, const WebCore::CSSSelector * idSelector, WTF::Vector&lt;WTF::Ref&lt;WebCore::Element&gt;,0,WTF::CrashOnOverflow&gt; &amp; output) Line 221	C++
 	WebKit.dll!WebCore::SelectorDataList::execute&lt;WebCore::AllElementExtractorSelectorQueryTrait&gt;(WebCore::ContainerNode &amp; rootNode, WTF::Vector&lt;WTF::Ref&lt;WebCore::Element&gt;,0,WTF::CrashOnOverflow&gt; &amp; output) Line 481	C++
 	WebKit.dll!WebCore::SelectorDataList::queryAll(WebCore::ContainerNode &amp; rootNode) Line 170	C++
 	WebKit.dll!WebCore::SelectorQuery::queryAll(WebCore::ContainerNode &amp; rootNode) Line 152	C++
 	WebKit.dll!WebCore::ContainerNode::querySelectorAll(const WTF::String &amp; selectors, int &amp; ec) Line 873	C++
 	WebKit.dll!WebCore::jsDocumentPrototypeFunctionQuerySelectorAll(JSC::ExecState * exec) Line 4767	C++
 	[External Code]	
 	[Frames below may be incorrect and/or missing]	
 	JavaScriptCore.dll!llint_entry() Line 7211	Unknown
 	[External Code]	
 	JavaScriptCore.dll!vmEntryToJavaScript() Line 109	Unknown
 	JavaScriptCore.dll!JSC::JITCode::execute(JSC::VM * vm, JSC::ProtoCallFrame * protoCallFrame) Line 77	C++
 	JavaScriptCore.dll!JSC::Interpreter::execute(JSC::ProgramExecutable * program, JSC::ExecState * callFrame, JSC::JSObject * thisObj) Line 914	C++
 	JavaScriptCore.dll!JSC::evaluate(JSC::ExecState * exec, const JSC::SourceCode &amp; source, JSC::JSValue thisValue, JSC::JSValue * returnedException) Line 83	C++
 	WebKit.dll!WebCore::JSMainThreadExecState::evaluate(JSC::ExecState * exec, const JSC::SourceCode &amp; source, JSC::JSValue thisValue, JSC::JSValue * exception) Line 62	C++
 	WebKit.dll!WebCore::ScriptController::evaluateInWorld(const WebCore::ScriptSourceCode &amp; sourceCode, WebCore::DOMWrapperWorld &amp; world) Line 150	C++
 	WebKit.dll!WebCore::ScriptController::evaluate(const WebCore::ScriptSourceCode &amp; sourceCode) Line 166	C++
 	WebKit.dll!WebCore::ScriptElement::executeScript(const WebCore::ScriptSourceCode &amp; sourceCode) Line 301	C++
 	WebKit.dll!WebCore::ScriptElement::prepareScript(const WTF::TextPosition &amp; scriptStartPosition, WebCore::ScriptElement::LegacyTypeSupport supportLegacyTypes) Line 237	C++
 	WebKit.dll!WebCore::HTMLScriptRunner::runScript(WebCore::Element * script, const WTF::TextPosition &amp; scriptStartPosition) Line 304	C++
 	WebKit.dll!WebCore::HTMLScriptRunner::execute(WTF::PassRefPtr&lt;WebCore::Element&gt; scriptElement, const WTF::TextPosition &amp; scriptStartPosition) Line 177	C++
 	WebKit.dll!WebCore::HTMLDocumentParser::runScriptsForPausedTreeBuilder() Line 197	C++
 	WebKit.dll!WebCore::HTMLDocumentParser::canTakeNextToken(WebCore::HTMLDocumentParser::SynchronousMode mode, WebCore::PumpSession &amp; session) Line 214	C++
 	WebKit.dll!WebCore::HTMLDocumentParser::pumpTokenizer(WebCore::HTMLDocumentParser::SynchronousMode mode) Line 259	C++
 	WebKit.dll!WebCore::HTMLDocumentParser::pumpTokenizerIfPossible(WebCore::HTMLDocumentParser::SynchronousMode mode) Line 167	C++
 	WebKit.dll!WebCore::HTMLDocumentParser::resumeParsingAfterScriptExecution() Line 492	C++
 	WebKit.dll!WebCore::HTMLDocumentParser::notifyFinished(WebCore::CachedResource * cachedResource) Line 532	C++
 	WebKit.dll!WebCore::CachedResource::checkNotify() Line 294	C++
 	WebKit.dll!WebCore::CachedResource::finishLoading(WebCore::SharedBuffer * __formal) Line 311	C++
 	WebKit.dll!WebCore::CachedScript::finishLoading(WebCore::SharedBuffer * data) Line 87	C++
 	WebKit.dll!WebCore::SubresourceLoader::didFinishLoading(double finishTime) Line 357	C++
 	WebKit.dll!WebCore::ResourceLoader::didFinishLoading(WebCore::ResourceHandle * __formal, double finishTime) Line 503	C++
 	WebKit.dll!WebCore::SynchronousResourceHandleCFURLConnectionDelegate::didFinishLoading() Line 181	C++
 	WebKit.dll!WebCore::ResourceHandleCFURLConnectionDelegate::didFinishLoadingCallback(_CFURLConnection * __formal, const void * clientInfo) Line 88	C++
 	CFNetwork.dll!URLConnectionClient::_clientDidFinishLoading(URLConnectionClient::ClientConnectionEventQueue * preQ) Line 1739	C++
 	CFNetwork.dll!URLConnectionClient::ClientConnectionEventQueue::processAllEventsAndConsumePayload(XConnectionEventInfo&lt;enum XClientEvent,XClientEventParams&gt; * e, long count) Line 2256	C++
 	CFNetwork.dll!URLConnectionClient::ClientConnectionEventQueue::processAllEventsAndConsumePayload(XConnectionEventInfo&lt;enum XClientEvent,XClientEventParams&gt; * e, long count) Line 2328	C++
 	CFNetwork.dll!XConnectionEventQueue&lt;enum XClientEvent,XClientEventParams&gt;::processAllEvents() Line 231	C++
 	CFNetwork.dll!URLConnectionClient::processEvents() Line 362	C++
 	CFNetwork.dll!MultiplexerSource::perform() Line 229	C++
 	CoreFoundation.dll!__CFRunLoopDoSources0(__CFRunLoop * rl, __CFRunLoopMode * rlm, unsigned char stopAfterHandle) Line 41844	C++
 	CoreFoundation.dll!__CFRunLoopRun(__CFRunLoop * rl, __CFRunLoopMode * rlm, double seconds, unsigned char stopAfterHandle, __CFRunLoopMode * previousMode) Line 42281	C++
 	CoreFoundation.dll!CFRunLoopRunSpecific(__CFRunLoop * rl, const __CFString * modeName, double seconds, unsigned char returnAfterSourceHandled) Line 42477	C++
 	CoreFoundation.dll!CFRunLoopRunInMode(const __CFString * modeName, double seconds, unsigned char returnAfterSourceHandled) Line 42511	C++
 	DumpRenderTree.dll!runTest(const std::basic_string&lt;char,std::char_traits&lt;char&gt;,std::allocator&lt;char&gt; &gt; &amp; inputLine) Line 1120	C++
 	DumpRenderTree.dll!main(int argc, const char * * argv) Line 1476	C++
 	DumpRenderTree.dll!dllLauncherEntryPoint(int argc, const char * * argv) Line 1506	C++
 	DumpRenderTree.exe!main(int argc, const char * * argv) Line 239	C++
 	[External Code]</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1061666</commentid>
    <comment_count>1</comment_count>
    <who name="Brent Fulgham">bfulgham</who>
    <bug_when>2015-01-15 15:39:34 -0800</bug_when>
    <thetext>This is also affecting &apos;fast/selectors/querySelector-id-with-multiple-elements-with-same-id.html&apos;

NoEventDispatchAssertion is asserting because the s_count value is zero.

The stack trace is:

&gt;	WTF.dll!WTFCrash() Line 321	C++
 	WebKit.dll!WebCore::NoEventDispatchAssertion::~NoEventDispatchAssertion() Line 63	C++
 	[External Code]	
 	WebKit.dll!WTF::deleteOwnedPtr&lt;WebCore::NoEventDispatchAssertion&gt;(WebCore::NoEventDispatchAssertion * ptr) Line 37	C++
 	WebKit.dll!WTF::OwnPtr&lt;WebCore::NoEventDispatchAssertion&gt;::clear() Line 116	C++
 	WebKit.dll!WTF::OwnPtr&lt;WebCore::NoEventDispatchAssertion&gt;::operator=(void * __formal) Line 68	C++
 	WebKit.dll!WebCore::ElementIteratorAssertions::dropEventDispatchAssertion() Line 68	C++
 	WebKit.dll!WebCore::ElementIterator&lt;WebCore::Element&gt;::traverseNext() Line 123	C++
 	WebKit.dll!WebCore::TypedElementDescendantIterator&lt;WebCore::Element&gt;::operator++() Line 102	C++
 	WebKit.dll!WebCore::DocumentOrderedMap::getAllElementsById(const WTF::AtomicStringImpl &amp; key, const WebCore::TreeScope &amp; scope) Line 193	C++
 	WebKit.dll!WebCore::TreeScope::getAllElementsById(const WTF::AtomicString &amp; elementId) Line 128	C++
 	WebKit.dll!WebCore::SelectorDataList::executeFastPathForIdSelector&lt;WebCore::AllElementExtractorSelectorQueryTrait&gt;(const WebCore::ContainerNode &amp; rootNode, const WebCore::SelectorDataList::SelectorData &amp; selectorData, const WebCore::CSSSelector * idSelector, WTF::Vector&lt;WTF::Ref&lt;WebCore::Element&gt;,0,WTF::CrashOnOverflow&gt; &amp; output) Line 221	C++
 	WebKit.dll!WebCore::SelectorDataList::execute&lt;WebCore::AllElementExtractorSelectorQueryTrait&gt;(WebCore::ContainerNode &amp; rootNode, WTF::Vector&lt;WTF::Ref&lt;WebCore::Element&gt;,0,WTF::CrashOnOverflow&gt; &amp; output) Line 481	C++
 	WebKit.dll!WebCore::SelectorDataList::queryAll(WebCore::ContainerNode &amp; rootNode) Line 170	C++
 	WebKit.dll!WebCore::SelectorQuery::queryAll(WebCore::ContainerNode &amp; rootNode) Line 152	C++
 	WebKit.dll!WebCore::ContainerNode::querySelectorAll(const WTF::String &amp; selectors, int &amp; ec) Line 873	C++
 	WebKit.dll!WebCore::jsElementPrototypeFunctionQuerySelectorAll(JSC::ExecState * exec) Line 3752	C++
 	[External Code]	
 	[Frames below may be incorrect and/or missing]	
 	JavaScriptCore.dll!llint_entry() Line 7211	Unknown
 	JavaScriptCore.dll!vmEntryToJavaScript() Line 109	Unknown
 	JavaScriptCore.dll!JSC::JITCode::execute(JSC::VM * vm, JSC::ProtoCallFrame * protoCallFrame) Line 77	C++
 	JavaScriptCore.dll!JSC::Interpreter::execute(JSC::EvalExecutable * eval, JSC::ExecState * callFrame, JSC::JSValue thisValue, JSC::JSScope * scope) Line 1201	C++
 	JavaScriptCore.dll!JSC::eval(JSC::ExecState * callFrame) Line 134	C++
 	JavaScriptCore.dll!llint_slow_path_call_eval(JSC::ExecState * exec, JSC::Instruction * pc) Line 1248	C++
 	JavaScriptCore.dll!llint_entry() Line 7424	Unknown
 	[External Code]	
 	JavaScriptCore.dll!vmEntryToJavaScript() Line 109	Unknown
 	JavaScriptCore.dll!JSC::JITCode::execute(JSC::VM * vm, JSC::ProtoCallFrame * protoCallFrame) Line 77	C++
 	JavaScriptCore.dll!JSC::Interpreter::execute(JSC::ProgramExecutable * program, JSC::ExecState * callFrame, JSC::JSObject * thisObj) Line 914	C++
 	JavaScriptCore.dll!JSC::evaluate(JSC::ExecState * exec, const JSC::SourceCode &amp; source, JSC::JSValue thisValue, JSC::JSValue * returnedException) Line 83	C++
 	WebKit.dll!WebCore::JSMainThreadExecState::evaluate(JSC::ExecState * exec, const JSC::SourceCode &amp; source, JSC::JSValue thisValue, JSC::JSValue * exception) Line 62	C++
 	WebKit.dll!WebCore::ScriptController::evaluateInWorld(const WebCore::ScriptSourceCode &amp; sourceCode, WebCore::DOMWrapperWorld &amp; world) Line 150	C++
 	WebKit.dll!WebCore::ScriptController::evaluate(const WebCore::ScriptSourceCode &amp; sourceCode) Line 166	C++
 	WebKit.dll!WebCore::ScriptElement::executeScript(const WebCore::ScriptSourceCode &amp; sourceCode) Line 301	C++
 	WebKit.dll!WebCore::ScriptElement::prepareScript(const WTF::TextPosition &amp; scriptStartPosition, WebCore::ScriptElement::LegacyTypeSupport supportLegacyTypes) Line 237	C++
 	WebKit.dll!WebCore::HTMLScriptRunner::runScript(WebCore::Element * script, const WTF::TextPosition &amp; scriptStartPosition) Line 304	C++
 	WebKit.dll!WebCore::HTMLScriptRunner::execute(WTF::PassRefPtr&lt;WebCore::Element&gt; scriptElement, const WTF::TextPosition &amp; scriptStartPosition) Line 177	C++
 	WebKit.dll!WebCore::HTMLDocumentParser::runScriptsForPausedTreeBuilder() Line 197	C++
 	WebKit.dll!WebCore::HTMLDocumentParser::canTakeNextToken(WebCore::HTMLDocumentParser::SynchronousMode mode, WebCore::PumpSession &amp; session) Line 214	C++
 	WebKit.dll!WebCore::HTMLDocumentParser::pumpTokenizer(WebCore::HTMLDocumentParser::SynchronousMode mode) Line 259	C++
 	WebKit.dll!WebCore::HTMLDocumentParser::pumpTokenizerIfPossible(WebCore::HTMLDocumentParser::SynchronousMode mode) Line 167	C++
 	WebKit.dll!WebCore::HTMLDocumentParser::resumeParsingAfterScriptExecution() Line 492	C++
 	WebKit.dll!WebCore::HTMLDocumentParser::notifyFinished(WebCore::CachedResource * cachedResource) Line 532	C++
 	WebKit.dll!WebCore::CachedResource::checkNotify() Line 294	C++
 	WebKit.dll!WebCore::CachedResource::finishLoading(WebCore::SharedBuffer * __formal) Line 311	C++
 	WebKit.dll!WebCore::CachedScript::finishLoading(WebCore::SharedBuffer * data) Line 87	C++
 	WebKit.dll!WebCore::SubresourceLoader::didFinishLoading(double finishTime) Line 357	C++
 	WebKit.dll!WebCore::ResourceLoader::didFinishLoading(WebCore::ResourceHandle * __formal, double finishTime) Line 503	C++
 	WebKit.dll!WebCore::SynchronousResourceHandleCFURLConnectionDelegate::didFinishLoading() Line 181	C++
 	WebKit.dll!WebCore::ResourceHandleCFURLConnectionDelegate::didFinishLoadingCallback(_CFURLConnection * __formal, const void * clientInfo) Line 88	C++
 	CFNetwork.dll!URLConnectionClient::_clientDidFinishLoading(URLConnectionClient::ClientConnectionEventQueue * preQ) Line 1739	C++
 	CFNetwork.dll!URLConnectionClient::ClientConnectionEventQueue::processAllEventsAndConsumePayload(XConnectionEventInfo&lt;enum XClientEvent,XClientEventParams&gt; * e, long count) Line 2256	C++
 	CFNetwork.dll!URLConnectionClient::ClientConnectionEventQueue::processAllEventsAndConsumePayload(XConnectionEventInfo&lt;enum XClientEvent,XClientEventParams&gt; * e, long count) Line 2328	C++
 	CFNetwork.dll!XConnectionEventQueue&lt;enum XClientEvent,XClientEventParams&gt;::processAllEvents() Line 231	C++
 	CFNetwork.dll!URLConnectionClient::processEvents() Line 362	C++
 	CFNetwork.dll!MultiplexerSource::perform() Line 229	C++
 	CoreFoundation.dll!__CFRunLoopDoSources0(__CFRunLoop * rl, __CFRunLoopMode * rlm, unsigned char stopAfterHandle) Line 41844	C++
 	CoreFoundation.dll!__CFRunLoopRun(__CFRunLoop * rl, __CFRunLoopMode * rlm, double seconds, unsigned char stopAfterHandle, __CFRunLoopMode * previousMode) Line 42281	C++
 	CoreFoundation.dll!CFRunLoopRunSpecific(__CFRunLoop * rl, const __CFString * modeName, double seconds, unsigned char returnAfterSourceHandled) Line 42477	C++
 	CoreFoundation.dll!CFRunLoopRunInMode(const __CFString * modeName, double seconds, unsigned char returnAfterSourceHandled) Line 42511	C++
 	DumpRenderTree.dll!runTest(const std::basic_string&lt;char,std::char_traits&lt;char&gt;,std::allocator&lt;char&gt; &gt; &amp; inputLine) Line 1120	C++
 	DumpRenderTree.dll!main(int argc, const char * * argv) Line 1476	C++
 	DumpRenderTree.dll!dllLauncherEntryPoint(int argc, const char * * argv) Line 1506	C++
 	DumpRenderTree.exe!main(int argc, const char * * argv) Line 239	C++
 	[External Code]</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>