[Webkit-unassigned] [Bug 150342] New: [Win] Access violation in Release build 64-bit JSC

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=150342

            Bug ID: 150342
           Summary: [Win] Access violation in Release build 64-bit JSC
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Windows 10
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: bfulgham at webkit.org

Running with a Release 64-bit JavaScriptCore build is frequently hitting the following crash when running the 'fast' WebKit test suite:

>	JavaScriptCore.dll!JSC::MarkedAllocator::reset() Line 215	C++
     JavaScriptCore.dll!JSC::MarkedSpace::resetAllocators() Line 109    C++
     JavaScriptCore.dll!JSC::Heap::collectImpl(JSC::HeapOperation collectionType, void * stackOrigin, void * stackTop, _SETJMP_FLOAT128[16] & calleeSavedRegisters) Line 1099    C++
     JavaScriptCore.dll!JSC::Heap::collect(JSC::HeapOperation collectionType) Line 1026    C++
     JavaScriptCore.dll!JSC::MarkedAllocator::allocateSlowCase(unsigned __int64 bytes) Line 159    C++
     WebKit.dll!WebCore::JSDOMWindowShell::setWindow(WTF::PassRefPtr<WebCore::DOMWindow> domWindow) Line 86    C++
     WebKit.dll!WebCore::JSDOMWindowShell::create(JSC::VM & vm, WTF::PassRefPtr<WebCore::DOMWindow> window, JSC::Structure * structure, WebCore::DOMWrapperWorld & world) Line 57    C++
     WebKit.dll!WebCore::ScriptController::createWindowShell(WebCore::DOMWrapperWorld & world) Line 133    C++
     WebKit.dll!WebCore::ScriptController::initScript(WebCore::DOMWrapperWorld & world) Line 252    C++
     WebKit.dll!WebCore::ScriptController::windowShell(WebCore::DOMWrapperWorld & world) Line 91    C++
     WebKit.dll!WebFrame::globalContext() Line 532    C++
     DumpRenderTreeLib.dll!resetWebViewToConsistentStateBeforeTesting() Line 917    C++
     DumpRenderTreeLib.dll!runTest(const std::basic_string<char,std::char_traits<char>,std::allocator<char> > & inputLine) Line 1175    C++
     DumpRenderTreeLib.dll!main(int argc, const char * * argv) Line 1494    C++
     DumpRenderTree.exe!main(int argc, const char * * argv) Line 269    C++
     [External Code]

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