[FLEX-22162] The loading of AS2 SWF file containing _root._quality crashes debugger mode (IE only)

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Cannot Reproduce
• Affects Version/s: Adobe Flex SDK Previous
• Fix Version/s: Adobe Flex SDK 4.5 (Release)
• Component/s: mx: SWFLoader
• Environment: Affected OS(s): All OS Platforms; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 24/Nov/09 03:52
• Updated: 10/May/11 13:45
• Resolved: 02/Nov/10 14:58

Description

Steps to reproduce:
1. Create an ActionScript 2 SWF file "QualityBug.swf" containing the following AS code on its main time line

this._quality = "HIGH";

2. Compile a simple Flex application with Flex SDK 3.1.0:

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" initialize="onInit()">
<mx:Script>
<![CDATA[
import mx.core.UIComponent;
import flash.display.Loader;
import flash.net.URLRequest;

private function onInit():void

{ var loader:Loader = new Loader; var container:UIComponent = new UIComponent(); container.addChild(loader); this.addChild(container); // here we load an AS2 SWF file containing this._quality="HIGH" code var request:URLRequest = new URLRequest("QualityBug.swf"); loader.load(request); }

]]
>
</mx:Script>

</mx:Application>

3. Launch the Flex application in debug mode (F11) when IE 6 (not checked with other browsers) is a default browser

Actual Results:
Debugger hangs, the following error message is written in error log:

undefined
at mx.core::UIComponent/validateDisplayList()[E:\dev\3.1.0\frameworks\projects\framework\src\mx\core\UIComponent.as:6284]
at mx.core::Container/validateDisplayList()[E:\dev\3.1.0\frameworks\projects\framework\src\mx\core\Container.as:2670]
at mx.managers::LayoutManager/validateDisplayList()[E:\dev\3.1.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:605]
at mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\3.1.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:660]
at Function/http://adobe.com/AS3/2006/builtin::apply()
at mx.core::UIComponent/callLaterDispatcher2()[E:\dev\3.1.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8565]
at mx.core::UIComponent/callLaterDispatcher()[E:\dev\3.1.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8508]

Expected Results:
Debugging works

Workaround (if any):
(a) Use other web browser for debugging
(b) Call the onInit() method in the creationComplete or applicationComplete event handler.