Before the Gmail page has finished loading… Thread 0:: Dispatch queue: com.apple.main-thread 0 com.apple.JavaScriptCore 0x0000000108679afe JSC::JIT::privateCompileSlowCases() + 894 1 com.apple.JavaScriptCore 0x000000010867a967 JSC::JIT::privateCompile(JSC::MacroAssemblerCodePtr*, JSC::JITCompilationEffort) + 1783 2 com.apple.JavaScriptCore 0x0000000108663ab2 JSC::jitCompileFunctionIfAppropriateImpl(JSC::ExecState*, JSC::FunctionCodeBlock*, WTF::RefPtr<JSC::JITCode>&, JSC::MacroAssemblerCodePtr&, JSC::JITCode::JITType, unsigned int, JSC::JITCompilationEffort) + 258 3 com.apple.JavaScriptCore 0x000000010866284c JSC::jitCompileFunctionIfAppropriate(JSC::ExecState*, JSC::FunctionCodeBlock*, WTF::RefPtr<JSC::JITCode>&, JSC::MacroAssemblerCodePtr&, JSC::JITCode::JITType, unsigned int, JSC::JITCompilationEffort) + 44 4 com.apple.JavaScriptCore 0x0000000108661732 JSC::FunctionExecutable::jitCompileForCall(JSC::ExecState*) + 50 5 com.apple.JavaScriptCore 0x000000010873a0a1 JSC::LLInt::jitCompileAndSetHeuristics(JSC::CodeBlock*, JSC::ExecState*) + 129 6 com.apple.JavaScriptCore 0x00000001087338f3 llint_replace + 147 7 com.apple.JavaScriptCore 0x000000010873d3b8 llint_op_ret + 28 8 com.apple.JavaScriptCore 0x0000000108690071 JSC::JITCode::execute(JSC::JSStack*, JSC::ExecState*, JSC::VM*) + 49 9 com.apple.JavaScriptCore 0x0000000108675d8a JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 650 10 com.apple.JavaScriptCore 0x0000000108553215 JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 69 11 com.apple.JavaScriptCore 0x00000001086c525e JSC::boundFunctionCall(JSC::ExecState*) + 526 12 ??? 0x00005363e1601045 0 + 91688448036933 13 com.apple.JavaScriptCore 0x0000000108690071 JSC::JITCode::execute(JSC::JSStack*, JSC::ExecState*, JSC::VM*) + 49 14 com.apple.JavaScriptCore 0x0000000108675d8a JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 650 15 com.apple.JavaScriptCore 0x0000000108553215 JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 69 16 com.apple.JavaScriptCore 0x00000001086c525e JSC::boundFunctionCall(JSC::ExecState*) + 526 17 ??? 0x00005363e1601045 0 + 91688448036933 18 com.apple.JavaScriptCore 0x0000000108690071 JSC::JITCode::execute(JSC::JSStack*, JSC::ExecState*, JSC::VM*) + 49 19 com.apple.JavaScriptCore 0x0000000108675d8a JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 650 20 com.apple.JavaScriptCore 0x0000000108553215 JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 69 21 com.apple.WebCore 0x00000001094794a9 WebCore::ScheduledAction::executeFunctionInContext(JSC::JSGlobalObject*, JSC::JSValue, WebCore::ScriptExecutionContext*) + 441 22 com.apple.WebCore 0x00000001094790fa WebCore::ScheduledAction::execute(WebCore::Document*) + 154 23 com.apple.WebCore 0x0000000108c6bc51 WebCore::DOMTimer::fired() + 273 24 com.apple.WebCore 0x000000010961556f WebCore::ThreadTimers::sharedTimerFiredInternal() + 175 25 com.apple.WebCore 0x00000001094ca2b3 WebCore::timerFired(__CFRunLoopTimer*, void*) + 51 26 com.apple.CoreFoundation 0x00007fff8f58c804 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20 27 com.apple.CoreFoundation 0x00007fff8f58c31d __CFRunLoopDoTimer + 557 28 com.apple.CoreFoundation 0x00007fff8f571ad9 __CFRunLoopRun + 1529 29 com.apple.CoreFoundation 0x00007fff8f5710e2 CFRunLoopRunSpecific + 290 30 com.apple.HIToolbox 0x00007fff8ed2aeb4 RunCurrentEventLoopInMode + 209 31 com.apple.HIToolbox 0x00007fff8ed2ac52 ReceiveNextEventCommon + 356 32 com.apple.HIToolbox 0x00007fff8ed2aae3 BlockUntilNextEventMatchingListInMode + 62 33 com.apple.AppKit 0x00007fff8ca6c533 _DPSNextEvent + 685 34 com.apple.AppKit 0x00007fff8ca6bdf2 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 128 35 com.apple.AppKit 0x00007fff8ca631a3 -[NSApplication run] + 517 36 com.apple.WebCore 0x0000000109474ee2 WebCore::RunLoop::run() + 82 37 com.apple.WebKit2 0x000000010817db72 int WebKit::ChildProcessMain<WebKit::WebProcess, WebKit::WebContentProcessMainDelegate>(int, char**) + 614 38 com.apple.WebProcess 0x0000000108094e23 main + 337 39 libdyld.dylib 0x00007fff854b57e1 start + 1
This stack trace is not useful, because the crash happens on a different thread. In the future, please attach a complete crash log as a file. I can reproduce this, getting this crash: Thread 15 Crashed:: JSC Compilation Thread 0 com.apple.JavaScriptCore 0x000000010d89b3de WTFCrash + 62 1 com.apple.JavaScriptCore 0x000000010d8b1bb9 WTF::CrashOnOverflow::overflowed() + 9 2 com.apple.JavaScriptCore 0x000000010d76eb6a JSC::DFG::JITCompiler::link(JSC::LinkBuffer&) + 5514 3 com.apple.JavaScriptCore 0x000000010d903507 JSC::DFG::JITCompiler::linkFunction() + 103 4 com.apple.JavaScriptCore 0x000000010d909edb JSC::DFG::Plan::compileInThreadImpl(JSC::DFG::LongLivedState&) + 971 5 com.apple.JavaScriptCore 0x000000010d909986 JSC::DFG::Plan::compileInThread(JSC::DFG::LongLivedState&) + 214 6 com.apple.JavaScriptCore 0x000000010d924044 JSC::DFG::Worklist::runThread() + 500 7 com.apple.JavaScriptCore 0x000000010d60f88f WTF::wtfThreadEntryPoint(void*) + 15 8 libsystem_pthread.dylib 0x00007fff8bdb38a9 _pthread_body + 138 9 libsystem_pthread.dylib 0x00007fff8bdb373a _pthread_start + 137 10 libsystem_pthread.dylib 0x00007fff8bdb7fd9 thread_start + 13
<rdar://problem/14757855>
Oops, this was filed earlier already. *** This bug has been marked as a duplicate of bug 119872 ***