[Webkit-unassigned] [Bug 42785] New: Crash in WebKit2WebProcess in WaitForMultipleObjects beneath WorkQueue::workQueueThreadBody when WebKitTestRunner exits

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=42785

           Summary: Crash in WebKit2WebProcess in WaitForMultipleObjects
                    beneath WorkQueue::workQueueThreadBody when
                    WebKitTestRunner exits
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Keywords: NeedsRadar, PlatformOnly
          Severity: Normal
          Priority: P2
         Component: WebKit2
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: aroben at apple.com
                CC: andersca at apple.com


To reproduce:

1. run-webkit-tests --webkit-test-runner

WebKit2WebProcess.exe crashes when WebKitTestRunner exits. It's crashing due to a null dereference inside WaitForMultipleObjects. Here's the backtrace:

     00000000()    
     0236ff10()    
     kernel32.dll!_WaitForMultipleObjects at 16()  + 0x18 bytes    
>	WebKit.dll!WorkQueue::workQueueThreadBody()  Line 63 + 0x1e bytes	C++
     WebKit.dll!WorkQueue::workQueueThreadBody(void * context=0x01d90a8c)  Line 46    C++
     JavaScriptCore.dll!WTF::threadEntryPoint(void * contextData=0x01d90c18)  Line 65 + 0x9 bytes    C++
     JavaScriptCore.dll!WTF::wtfThreadEntryPoint(void * param=0x01d90c48)  Line 202 + 0x9 bytes    C++
     msvcr80.dll!_callthreadstartex()  Line 348 + 0x6 bytes    C
     msvcr80.dll!_threadstartex(void * ptd=0x01d90c58)  Line 326 + 0x5 bytes    C
     kernel32.dll!_BaseThreadStart at 8()  + 0x37 bytes

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