[Webkit-unassigned] [Bug 162483] New: DumpRenderTree crashed in com.apple.WebCore: WTF::Optional<WebCore::FetchBodyOwner::BlobLoader>::operator bool const + 12

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=162483

            Bug ID: 162483
           Summary: DumpRenderTree crashed in com.apple.WebCore:
                    WTF::Optional<WebCore::FetchBodyOwner::BlobLoader>::op
                    erator bool const + 12
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: youennf at gmail.com

Crash log is:
0   com.apple.WebCore                 0x00000001160d269c WTF::Optional<WebCore::FetchBodyOwner::BlobLoader>::operator bool() const + 12
1   com.apple.WebCore                 0x00000001160d14a5 WebCore::FetchBodyOwner::stop() + 213
2   com.apple.WebCore                 0x00000001179428c2 WebCore::ScriptExecutionContext::stopActiveDOMObjects() + 290
3   com.apple.WebCore                 0x0000000118097da9 WebCore::WorkerThread::stop()::$_0::operator()(WebCore::ScriptExecutionContext&) const + 57
4   com.apple.WebCore                 0x0000000118097d47 WTF::Function<void (WebCore::ScriptExecutionContext&)>::CallableWrapper<WebCore::WorkerThread::stop()::$_0>::call(WebCore::ScriptExecutionContext&) + 55
5   com.apple.WebCore                 0x0000000115ef5b57 WTF::Function<void (WebCore::ScriptExecutionContext&)>::operator()(WebCore::ScriptExecutionContext&) const + 119
6   com.apple.WebCore                 0x0000000115ee59fd WebCore::ScriptExecutionContext::Task::performTask(WebCore::ScriptExecutionContext&) + 29
7   com.apple.WebCore                 0x000000011808f6c9 WebCore::WorkerRunLoop::Task::performTask(WebCore::WorkerRunLoop const&, WebCore::WorkerGlobalScope*) + 105
8   com.apple.WebCore                 0x000000011808f4e8 WebCore::WorkerRunLoop::runCleanupTasks(WebCore::WorkerGlobalScope*) + 408
9   com.apple.WebCore                 0x000000011808ed63 WebCore::WorkerRunLoop::run(WebCore::WorkerGlobalScope*) + 115
10  com.apple.WebCore                 0x0000000118097455 WebCore::WorkerThread::runEventLoop() + 53
11  com.apple.WebCore                 0x0000000115e4d2c9 WebCore::DedicatedWorkerThread::runEventLoop() + 89
12  com.apple.WebCore                 0x0000000118097377 WebCore::WorkerThread::workerThread() + 1127
13  com.apple.WebCore                 0x0000000118096f05 WebCore::WorkerThread::workerThreadStart(void*) + 21

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