ASSERTION FAILED: Tried to start the stopwatch, but it is already running.

• Component: Web Inspector
• Status: RESOLVED CONFIGURATION CHANGED

[Mark Lam]

ASSERTION FAILED: Tried to start the stopwatch, but it is already running.
std::isnan(m_lastStartTime)
/Volumes/Data/ws2/OpenSource/WebKitBuild/Debug/usr/local/include/wtf/Stopwatch.h(63) : void WTF::Stopwatch::start()
1   0x10da65ff0 WTFCrash
2   0x10d5a429e WTF::Stopwatch::start()
3   0x10d5a1eb4 Inspector::InspectorDebuggerAgent::didContinue()
4   0x10d5a1fcc non-virtual thunk to Inspector::InspectorDebuggerAgent::didContinue()
5   0x10d97e1c5 Inspector::ScriptDebugServer::dispatchDidContinue(Inspector::ScriptDebugListener*)
6   0x10d97e7f5 Inspector::ScriptDebugServer::dispatchFunctionToListeners(WTF::HashSet<Inspector::ScriptDebugListener*, WTF::PtrHash<Inspector::ScriptDebugListener*>, WTF::HashTraits<Inspector::ScriptDebugListener*> > const&, void (Inspector::ScriptDebugServer::*)(Inspector::ScriptDebugListener*))
7   0x10d97e6fc Inspector::ScriptDebugServer::dispatchFunctionToListeners(void (Inspector::ScriptDebugServer::*)(Inspector::ScriptDebugListener*))
8   0x10d97eb2c Inspector::ScriptDebugServer::handlePause(JSC::JSGlobalObject*, JSC::Debugger::ReasonForPause)
9   0x10d0ecc3c JSC::Debugger::pauseIfNeeded(JSC::ExecState*)
10  0x10d0ecebc JSC::Debugger::updateCallFrameAndPauseIfNeeded(JSC::ExecState*)
11  0x10d0ed01c JSC::Debugger::atStatement(JSC::ExecState*)
12  0x10d61719b JSC::Interpreter::debug(JSC::ExecState*, JSC::DebugHookID)
13  0x10d7d9a1b llint_slow_path_debug
14  0x10d7e5e8a llint_entry
15  0x10d7e58e3 llint_entry
16  0x10d7df119 vmEntryToJavaScript
17  0x10d63160c JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*)
18  0x10d6163e2 JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
19  0x10d025a9e JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
20  0x10d025b03 JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)
21  0x11025e6fb WebCore::JSMainThreadExecState::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)
22  0x1103db542 WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*)
23  0x10fb88167 WebCore::EventTarget::fireEventListeners(WebCore::Event*, WebCore::EventTargetData*, WTF::Vector<WebCore::RegisteredEventListener, 1ul, WTF::CrashOnOverflow, 16ul>&)
24  0x10fb8798e WebCore::EventTarget::fireEventListeners(WebCore::Event*)
25  0x10faafa4b WebCore::DOMWindow::dispatchEvent(WTF::PassRefPtr<WebCore::Event>, WTF::PassRefPtr<WebCore::EventTarget>)
26  0x10fab72b5 WebCore::DOMWindow::dispatchLoadEvent()
27  0x10f96b4fd WebCore::Document::dispatchWindowLoadEvent()
28  0x10f967d2e WebCore::Document::implicitClose()
29  0x10fcf926b WebCore::FrameLoader::checkCallImplicitClose()
30  0x10fcf8f3e WebCore::FrameLoader::checkCompleted()
31  0x10fcf7a52 WebCore::FrameLoader::finishedParsing()


Steps to repro:
1. Follow steps to repro 148380: https://bugs.webkit.org/show_bug.cgi?id=148380#c5.
   It will fail to repro.
2. Reload the webpage.

You should see the above crash at this point.

I'm using a debug build of r189176.

[Radar WebKit Bug Importer]

<rdar://problem/22505472>