135446 2014-07-30 18:18:50 -0700 REGRESSION: Exception causing crash in UIWebView iOS 8 Beta 2014-07-31 10:04:31 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) iPhone / iPad Unspecified NEW P2 Normal --- 1 zack.ulrich webkit-unassigned ggaren mhahnenberg oldest_to_newest 1025852 0 235789 zack.ulrich 2014-07-30 18:18:50 -0700 Created attachment 235789 Stack trace from crash I was testing out calling some Javascript with my iOS app and noticed that I could crash the app by causing an exception. The JS that I'm calling is attached below as well as the objective c code that I'm using to call it. I'm calling a named autoexecuting function which just has a generic try catch inside. The second time the function executes and the exception is caused the app crashes. I tested this same function using the new WKWebView and it doesn't crash the app but it seems to crash my the webview, I can't execute anything on it the second time the function runs. I've run this code on iOS 7 and it doesn't cause a crash. function ActivateDemo() { this.testFunction = function() { if (document.body.style.backgroundColor == "red") { document.body.style.backgroundColor="blue"; } else { document.body.style.backgroundColor="red"; } (function namedFunc() { try{ eval("console.log('hey from function'aa')") } catch(e) { console.log('exception ' + e) } })(); } } var AD = window.AD = new ActivateDemo(); ////objc code ////////////// - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. NSString *fullURL = @"http://10.20.11.166/testWeb.html"; NSURL *url = [NSURL URLWithString:fullURL]; NSURLRequest *requestObj = [NSURLRequest requestWithURL:url]; self.wkTest = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 300)]; [self.view addSubview:self.wkTest]; [self.wkTest loadRequest:requestObj]; self.testButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 350, 50, 50)]; [self.testButton setBackgroundColor:[UIColor blueColor]]; [self.testButton setTitle:@"Test" forState:UIControlStateNormal]; [self.testButton addTarget:self action:@selector(testBut) forControlEvents:UIControlEventTouchUpInside]; self.testWebView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 400, 100, 300)]; [self.view addSubview:self.testWebView]; [self.testWebView loadRequest:requestObj]; [self.view addSubview:self.testButton]; } -(void)testBut { [self.wkTest evaluateJavaScript:@"AD.testFunction()" completionHandler:nil]; [self.testWebView stringByEvaluatingJavaScriptFromString:@"AD.testFunction();"]; } // 1025854 1 235791 zack.ulrich 2014-07-30 18:19:47 -0700 Created attachment 235791 JS function 1025855 2 235792 zack.ulrich 2014-07-30 18:20:31 -0700 Created attachment 235792 Objc code 235789 2014-07-30 18:18:50 -0700 2014-07-30 18:18:50 -0700 Stack trace from crash stacktrace application/octet-stream 1836 zack.ulrich MSAgIDB4YTBmM2U4ZCBKU0M6OmdlbmVyaWNVbndpbmQoSlNDOjpWTSosIEpTQzo6RXhlY1N0YXRl KiwgSlNDOjpKU1ZhbHVlKQoyICAgMHhhMjBhZTMxIGxsaW50X3Nsb3dfcGF0aF9oYW5kbGVfZXhj ZXB0aW9uCjMgICAweGEyMTFmMmUgbGxpbnRfZW50cnkKNCAgIDB4YTIxMzFlNiBsbGludF9lbnRy eQo1ICAgMHhhMjEzMWU2IGxsaW50X2VudHJ5CjYgICAweGEyMGVkYTYgY2FsbFRvSmF2YVNjcmlw dAo3ICAgMHhhMGYxZmYxIEpTQzo6SklUQ29kZTo6ZXhlY3V0ZShKU0M6OlZNKiwgSlNDOjpQcm90 b0NhbGxGcmFtZSopCjggICAweGEwZDNhNWUgSlNDOjpJbnRlcnByZXRlcjo6ZXhlY3V0ZShKU0M6 OlByb2dyYW1FeGVjdXRhYmxlKiwgSlNDOjpFeGVjU3RhdGUqLCBKU0M6OkpTT2JqZWN0KikKOSAg 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JS function testFunction.js application/x-javascript 451 zack.ulrich CWZ1bmN0aW9uIEFjdGl2YXRlRGVtbygpIHsKCgkJdGhpcy50ZXN0RnVuY3Rpb24gPSBmdW5jdGlv bigpCgkJewoJCQlpZiAoZG9jdW1lbnQuYm9keS5zdHlsZS5iYWNrZ3JvdW5kQ29sb3IgPT0gInJl ZCIpIAoJCQl7CgkJCQlkb2N1bWVudC5ib2R5LnN0eWxlLmJhY2tncm91bmRDb2xvcj0iYmx1ZSI7 CgkJCX0KCQkJZWxzZQoJCQl7CgkJCQlkb2N1bWVudC5ib2R5LnN0eWxlLmJhY2tncm91bmRDb2xv cj0icmVkIjsKCQkJfQoJCQkgCgkJCShmdW5jdGlvbiBuYW1lZEZ1bmMoKSB7CgkJCXRyeXsKCQkJ CWV2YWwoImNvbnNvbGUubG9nKCdoZXkgZnJvbSBmdW5jdGlvbidhYScpIikKCQkJfQoJCQljYXRj aChlKQoJCQl7CgkJCQljb25zb2xlLmxvZygnZXhjZXB0aW9uICcgKyBlKQoJCQl9CgkJCX0pKCk7 CgkJfQoJfQoJdmFyIEFEID0gd2luZG93LkFEID0gbmV3IEFjdGl2YXRlRGVtbygpOwoKCg== 235792 2014-07-30 18:20:31 -0700 2014-07-30 18:20:31 -0700 Objc code ViewController.m application/octet-stream 1644 zack.ulrich Ly8KLy8gIFZpZXdDb250cm9sbGVyLm0KLy8gIHdlYnZpZXd0ZXN0Ci8vCi8vICBDcmVhdGVkIGJ5 IFphY2sgVWxyaWNoIG9uIDcvMzAvMTQuCi8vICBDb3B5cmlnaHQgKGMpIDIwMTQgWmFjayBVbHJp 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