[Webkit-unassigned] [Bug 51720] New: [Chromium] http/tests/incremental/split-hex-entities.pl is flaky in debug builds

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=51720

           Summary: [Chromium]
                    http/tests/incremental/split-hex-entities.pl is flaky
                    in debug builds
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mihaip at chromium.org
                CC: abarth at webkit.org, japhet at chromium.org


http/tests/incremental/split-hex-entities.pl appears to occasionally crash (due to a failed assertion) with debug builds: http://test-results.appspot.com/dashboards/flakiness_dashboard.html#showAllRuns=true&showExpectations=true&master=ChromiumWebkit&tests=http%2Ftests%2Fincremental%2Fsplit-hex-entities.pl

The assertion is:
ASSERTION FAILED: !m_pushedChar1
(third_party/WebKit/WebCore/platform/text/SegmentedString.h:210 int WebCore::SegmentedString::numberOfCharactersConsumed() const)
[9796:9796:1440464744106:ERROR:process_util_posix.cc(106)] Received signal 11

With the stack:
    WebCore::HTMLMetaCharsetParser::checkForMetaCharset() [0x937da80]
    WebCore::TextResourceDecoder::checkForMetaCharset() [0x8c3f86e]
    WebCore::TextResourceDecoder::checkForHeadCharset() [0x8c405f9]
    WebCore::TextResourceDecoder::decode() [0x8c406da]
    WebCore::DecodedDataDocumentParser::appendBytes() [0x8a73857]
    WebCore::DocumentWriter::addData() [0x8c1144d]
    WebCore::DocumentLoader::commitData() [0x8c09943]
    WebKit::WebFrameImpl::commitDocumentData() [0x80acd0e]
    WebKit::FrameLoaderClientImpl::committedLoad() [0x80f31bb]
    WebCore::DocumentLoader::commitLoad() [0x8c09a22]
    WebCore::DocumentLoader::receivedData() [0x8c09a7c]
    WebCore::MainResourceLoader::addData() [0x8c2b858]
    WebCore::ResourceLoader::didReceiveData() [0x8c357d9]
    WebCore::MainResourceLoader::didReceiveData() [0x8c2ad60]
    WebCore::ResourceLoader::didReceiveData() [0x8c34fbc]
    WebCore::ResourceHandleInternal::didReceiveData() [0x930a443]
    webkit_glue::WebURLLoaderImpl::Context::OnReceivedData() [0x92d9ed7]
    (anonymous namespace)::RequestProxy::NotifyReceivedData() [0x81b3339]
    DispatchToMethod<>() [0x81af5d4]
    RunnableMethod<>::Run() [0x81af60a]
    MessageLoop::RunTask() [0x844a089]
    MessageLoop::DeferOrRunPendingTask() [0x844a13f]
    MessageLoop::DoWork() [0x844a427]
    base::MessagePumpForUI::RunWithDispatcher() [0x8492d66]
    base::MessagePumpForUI::Run() [0x849274d]
    MessageLoop::RunInternal() [0x844ac61]
    MessageLoop::RunHandler() [0x844ac7b]
    MessageLoop::Run() [0x844ad1f]
    webkit_support::RunMessageLoop() [0x819c3eb]
    TestShell::waitTestFinished() [0x808fc0e]
    TestShell::runFileTest() [0x808b9d5]
    runTest() [0x806809b]
    main [0x8068a65]
    0x40c4f450
    0x8059521

The earliest failure of this kind is at r74141.

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