[Webkit-unassigned] [Bug 112369] New: Assertion failure !m_lastChunkBeforeScript in HTMLDocumentParser during inspector/debugger/pause-in-inline-script.html

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=112369

           Summary: Assertion failure !m_lastChunkBeforeScript in
                    HTMLDocumentParser during
                    inspector/debugger/pause-in-inline-script.html
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kbr at google.com
                CC: abarth at webkit.org, pfeldman at chromium.org


Layout test inspector/debugger/pause-in-inline-script.html is crashing on chromium.webkit debug bots (all OSs) with the following assertion failure:

crash log for DumpRenderTree (pid 1073):
STDOUT: <empty>
STDERR: ASSERTION FAILED: !m_lastChunkBeforeScript
STDERR: ../../third_party/WebKit/Source/WebCore/html/parser/HTMLDocumentParser.cpp(339) : void WebCore::HTMLDocumentParser::validateSpeculations(WTF::PassOwnPtr<WebCore::HTMLDocumentParser::ParsedChunk>)
STDERR: 1   0xe00051
STDERR: 2   0xe00c76
STDERR: 3   0xdfff20
STDERR: 4   0xe979d3
STDERR: 5   0xe9790d
STDERR: 6   0x46082e
STDERR: 7   0x460530
STDERR: 8   0x1863e94
STDERR: 9   0x1863dc4
STDERR: 10  0x1863bb3
STDERR: 11  0x208955f
STDERR: 12  0x2764993
STDERR: 13  0x2764aaa
STDERR: 14  0x2765311
STDERR: 15  0x27cfb72
STDERR: 16  0x27cfff4
STDERR: 17  0x276459b
STDERR: 18  0x2764456
STDERR: 19  0x278f80c
STDERR: 20  0x2763d8e
STDERR: 21  0x18605bb
STDERR: 22  0x42bc55
STDERR: 23  0x425e92
STDERR: 24  0x41f4d0
STDERR: 25  0x42007b
STDERR: 26  0x7f436588b76d __libc_start_main
STDERR: 27  0x41dbc9
STDERR: Received signal 11 SEGV_MAPERR 0000bbadbeef
STDERR:  [0x000002744c18] base::debug::StackTrace::StackTrace()
STDERR:  [0x00000274451f] base::debug::(anonymous namespace)::StackDumpSignalHandler()
STDERR:  [0x7f4366861cb0] <unknown>
STDERR:  [0x000000e0005b] WebCore::HTMLDocumentParser::validateSpeculations()
STDERR:  [0x000000e00c76] WebCore::HTMLDocumentParser::processParsedChunkFromBackgroundParser()
STDERR:  [0x000000dfff20] WebCore::HTMLDocumentParser::didReceiveParsedChunkFromBackgroundParser()
STDERR:  [0x000000e979d3] WTF::FunctionWrapper<>::operator()()
STDERR:  [0x000000e9790d] WTF::BoundFunctionImpl<>::operator()()
STDERR:  [0x00000046082e] WTF::Function<>::operator()()
STDERR:  [0x000000460530] WTF::callFunctionObject()
STDERR:  [0x000001863e94] base::internal::RunnableAdapter<>::Run()
STDERR:  [0x000001863dc4] base::internal::InvokeHelper<>::MakeItSo()
STDERR:  [0x000001863bb3] base::internal::Invoker<>::Run()
STDERR:  [0x00000208955f] base::Callback<>::Run()
STDERR:  [0x000002764993] MessageLoop::RunTask()
STDERR:  [0x000002764aaa] MessageLoop::DeferOrRunPendingTask()
STDERR:  [0x000002765311] MessageLoop::DoWork()
STDERR:  [0x0000027cfb72] base::MessagePumpGlib::RunWithDispatcher()
STDERR:  [0x0000027cfff4] base::MessagePumpGlib::Run()
STDERR:  [0x00000276459b] MessageLoop::RunInternal()
STDERR:  [0x000002764456] MessageLoop::RunHandler()
STDERR:  [0x00000278f80c] base::RunLoop::Run()
STDERR:  [0x000002763d8e] MessageLoop::Run()
STDERR:  [0x0000018605bb] webkit_support::RunMessageLoop()
STDERR:  [0x00000042bc55] TestShell::waitTestFinished()
STDERR:  [0x000000425e92] TestShell::runFileTest()
STDERR:  [0x00000041f4d0] runTest()
STDERR:  [0x00000042007b] main
STDERR:  [0x7f436588b76d] __libc_start_main
STDERR:  [0x00000041dbc9] <unknown>
STDERR:   r8: 00007f4369e5c980  r9: 00000000004002d0 r10: 0000000002a8146e r11: 0000000000000000
STDERR:  r12: 00007fffa4dead28 r13: 00007fffa4deb8c0 r14: 0000000000000000 r15: 0000000000000000
STDERR:   di: 0000000000000000  si: 00000000efcdab90  bp: 00007fffa4de9fc0  bx: 0000351bd5acf900
STDERR:   dx: 00007f4365c24aa0  ax: 00000000bbadbeef  cx: 00007f436595091d  sp: 00007fffa4de9f10
STDERR:   ip: 0000000000e0005b efl: 0000000000010246 cgf: 0000000000000033 erf: 0000000000000006
STDERR:  trp: 000000000000000e msk: 0000000000000000 cr2: 00000000bbadbeef


Example failures:
http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Win7%20%28dbg%29%282%29/builds/2395/steps/webkit_tests
http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20%28dbg%29/builds/7136/steps/webkit_tests

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