139198 2014-12-02 14:28:21 -0800 Assertion failure in DFG::Node::switchData() (isSwitch()) at cnn.com 2014-12-02 14:30:30 -0800 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) Unspecified Unspecified NEW http://www.cnn.com InRadar P2 Normal --- 1 mitz webkit-unassigned oldest_to_newest 1051962 0 mitz 2014-12-02 14:28:21 -0800 To reproduce the bug, navigate to http://www.cnn.com/. The result is ASSERTION FAILED: isSwitch() Source/JavaScriptCore/dfg/DFGNode.h(1004) : JSC::DFG::SwitchData *JSC::DFG::Node::switchData() 1 0x10a267060 WTFCrash 2 0x1099e0f65 JSC::DFG::Node::switchData() 3 0x109a4605d JSC::DFG::Node::numSuccessors() 4 0x109a45f6d JSC::DFG::BasicBlock::numSuccessors() 5 0x109b4018e JSC::DFG::Graph::determineReachability() 6 0x109a125d5 JSC::DFG::ByteCodeParser::parse() 7 0x109a129d2 JSC::DFG::parse(JSC::DFG::Graph&) 8 0x109beb9db JSC::DFG::Plan::compileInThreadImpl(JSC::DFG::LongLivedState&) 9 0x109beb53d JSC::DFG::Plan::compileInThread(JSC::DFG::LongLivedState&, JSC::DFG::ThreadData*) 10 0x109cd38b4 JSC::DFG::Worklist::runThread(JSC::DFG::ThreadData*) 11 0x109cd1294 JSC::DFG::Worklist::threadFunction(void*) 12 0x10a2bf7f9 WTF::createThread(void (*)(void*), void*, char const*)::$_0::operator()() const 13 0x10a2bf7cc std::__1::__function::__func<WTF::createThread(void (*)(void*), void*, char const*)::$_0, std::__1::allocator<WTF::createThread(void (*)(void*), void*, char const*)::$_0>, void ()>::operator()() 14 0x10a293001 std::__1::function<void ()>::operator()() const 15 0x10a2be5de WTF::threadEntryPoint(void*) 16 0x10a2bff6c WTF::wtfThreadEntryPoint(void*) 17 0x1045cb268 _pthread_body 18 0x1045cb1e5 _pthread_body 19 0x1045c941d thread_start 1051963 1 mitz 2014-12-02 14:30:30 -0800 <rdar://problem/19119833>