Created attachment 295498 [details] Crash log ASSERTION FAILED: !m_mayBeExecuting /Volumes/Data/slave/elcapitan-debug/build/Source/JavaScriptCore/jit/GCAwareJITStubRoutine.cpp(75) : void JSC::GCAwareJITStubRoutine::deleteFromGC() 1 0x10b371a00 WTFCrash 2 0x10ab25901 JSC::GCAwareJITStubRoutine::deleteFromGC() 3 0x10acdd76d JSC::JITStubRoutineSet::deleteUnmarkedJettisonedStubRoutines() 4 0x10ab37e9a JSC::Heap::deleteUnmarkedCompiledCode() 5 0x10ab3a98d JSC::Heap::finalize() 6 0x10ab3a4d8 JSC::Heap::handleNeedFinalize(unsigned int) 7 0x10ab3a2ff JSC::Heap::stopIfNecessarySlow(unsigned int) 8 0x10ab3a276 JSC::Heap::stopIfNecessarySlow() 9 0x10ab3fdde JSC::Heap::stopIfNecessary() 10 0x10ab343bb JSC::Heap::collectIfNecessaryOrDefer(JSC::GCDeferralContext*) 11 0x10ab3b8af JSC::Heap::decrementDeferralDepthAndGCIfNeeded() 12 0x10a2b79a8 JSC::DeferGC::~DeferGC() 13 0x10a2b5185 JSC::DeferGC::~DeferGC() 14 0x10b16ed39 JSC::Structure::materializePropertyTable(JSC::VM&, bool) 15 0x10b16f77e JSC::Structure::takePropertyTableOrCloneIfPinned(JSC::VM&) 16 0x10b16f4d9 JSC::Structure::addNewPropertyTransition(JSC::VM&, JSC::Structure*, JSC::PropertyName, unsigned int, int&, JSC::PutPropertySlot::Context, JSC::DeferredStructureTransitionWatchpointFire*) 17 0x10a2cb652 bool JSC::JSObject::putDirectInternal<(JSC::JSObject::PutMode)1>(JSC::VM&, JSC::PropertyName, JSC::JSValue, unsigned int, JSC::PutPropertySlot&) 18 0x10a2c736d JSC::JSObject::putDirect(JSC::VM&, JSC::PropertyName, JSC::JSValue, unsigned int) 19 0x10ad3daa3 JSC::JSFunction::finishCreation(JSC::VM&, JSC::NativeExecutable*, int, WTF::String const&) 20 0x10ad3d933 JSC::JSFunction::create(JSC::VM&, JSC::JSGlobalObject*, int, WTF::String const&, long long (*)(JSC::ExecState*), JSC::Intrinsic, long long (*)(JSC::ExecState*), JSC::DOMJIT::Signature const*) 21 0x10ab1efc6 JSC::FunctionPrototype::addFunctionProperties(JSC::ExecState*, JSC::JSGlobalObject*, JSC::JSFunction**, JSC::JSFunction**, JSC::JSFunction**) 22 0x10ad5c903 JSC::JSGlobalObject::init(JSC::VM&) 23 0x111aa346c JSC::JSGlobalObject::finishCreation(JSC::VM&, JSC::JSObject*) 24 0x111aa2c3a WebCore::JSDOMGlobalObject::finishCreation(JSC::VM&, JSC::JSObject*) 25 0x111bcdd88 WebCore::JSDOMWindowBase::finishCreation(JSC::VM&, WebCore::JSDOMWindowShell*) 26 0x111b10b86 WebCore::JSDOMWindow::finishCreation(JSC::VM&, WebCore::JSDOMWindowShell*) 27 0x111bf158c WebCore::JSDOMWindow::create(JSC::VM&, JSC::Structure*, WTF::Ref<WebCore::DOMWindow>&&, WebCore::JSDOMWindowShell*) 28 0x111bf0f19 WebCore::JSDOMWindowShell::setWindow(WTF::RefPtr<WebCore::DOMWindow>&&) 29 0x112c98432 WebCore::ScriptController::clearWindowShell(WebCore::DOMWindow*, bool) 30 0x1112f59fe WebCore::FrameLoader::clear(WebCore::Document*, bool, bool, bool) 31 0x111014f74 WebCore::DocumentWriter::begin(WebCore::URL const&, bool, WebCore::Document*) Seen with LayoutTest http/tests/cache/cache-redirections.html https://build.webkit.org/results/Apple%20El%20Capitan%20Debug%20WK1%20(Tests)/r208998%20(9936)/results.html
<rdar://problem/29464762>