* STEPS TO REPRODUCE 1. JSContext with "function a() { debugger; b() } function b() { console.log("b"); }" 2. Inspect JSContext 3. run a() 4. Step Into => CRASH * DETAILS Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 JavaScriptCore 0x003db692 Inspector::InspectorDebuggerAgent::stepInto(WTF::String*) + 90 1 JavaScriptCore 0x003db6b8 non-virtual thunk to Inspector::InspectorDebuggerAgent::stepInto(WTF::String*) + 24 2 JavaScriptCore 0x003e60ce Inspector::InspectorDebuggerBackendDispatcher::stepInto(long, Inspector::InspectorObject const&) + 70 3 JavaScriptCore 0x003e5136 Inspector::InspectorDebuggerBackendDispatcher::dispatch(long, WTF::String const&, WTF::PassRefPtr<Inspector::InspectorObject>) + 634 4 JavaScriptCore 0x003cdf6c Inspector::InspectorBackendDispatcher::dispatch(WTF::String const&) + 1060 5 JavaScriptCore 0x0048d3d4 Inspector::JSGlobalObjectInspectorController::dispatchMessageFromFrontend(WTF::String const&) + 40 Looks like we forgot to null check m_listener in this one place. <rdar://problem/17364180>
Created attachment 235605 [details] [PATCH] Proposed Fix
Comment on attachment 235605 [details] [PATCH] Proposed Fix Clearing flags on attachment: 235605 Committed r171688: <http://trac.webkit.org/changeset/171688>
All reviewed patches have been landed. Closing bug.