LayoutTests/fast/events/message-port-no-wrapper.html - WebKit - Git at Google

 <body>
 <p>Test that delivering a message to a port that was never referenced from JS doesn't cause a crash.</p>
 <pre id=log></pre>

 <script>
 function gc()
 {
     if (window.GCController)
         return GCController.collect();

     for (var i = 0; i < 10000; i++) { // > force garbage collection (FF requires about 9K allocations before a collect)
         var s = new String("abc");
     }
 }

 function log(message)
 {
     document.getElementById("log").innerHTML += message + "<br>";
 }

 if (window.testRunner) {
     testRunner.dumpAsText();
     testRunner.waitUntilDone();
 }

 var channel = new MessageChannel;
 channel.port1.postMessage("msg");
 channel.port1.start();
 channel = 0;
 gc();

 setTimeout("log('PASS'); if (window.testRunner) testRunner.notifyDone()", 100);

 </script>
 </body>
	<body>
	<p>Test that delivering a message to a port that was never referenced from JS doesn't cause a crash.</p>
	<pre id=log></pre>

	<script>
	function gc()
	{
	if (window.GCController)
	return GCController.collect();

	for (var i = 0; i < 10000; i++) { // > force garbage collection (FF requires about 9K allocations before a collect)
	var s = new String("abc");
	}
	}

	function log(message)
	{
	document.getElementById("log").innerHTML += message + "<br>";
	}

	if (window.testRunner) {
	testRunner.dumpAsText();
	testRunner.waitUntilDone();
	}

	var channel = new MessageChannel;
	channel.port1.postMessage("msg");
	channel.port1.start();
	channel = 0;
	gc();

	setTimeout("log('PASS'); if (window.testRunner) testRunner.notifyDone()", 100);

	</script>
	</body>