64834 - onload handler causes leak of plugin and plugin manager

Status: VERIFIED DUPLICATE of bug 43840

(Core :: DOM: Core & HTML, defect)

Description

[sean echevarria]

Will attach testcase that demonstrates a leak of nsPluginHostImpl service and 
of an embedded plugin.

At exit, mozilla displays the following:

JS engine warning: leaking GC root 'nsXPCWrappedNative::mJSObj' at 03483080
JS engine warning: 1 GC root remains after destroying the JSRuntime.
                   This root may point to freed memory. Objects reachable
                   through it have not been finalized.

Comment 1

[sean echevarria]

Attachment: testcase

Comment 2

[sean echevarria]

Adding mlk keyword and url.
These leaks occur with any page that sources in the Beatnik Music-Object.js 
(http://www.beatnik.com/software/music_object.html).

Comment 3

[sean echevarria]

Damn - turns out it's just a dupe of bug 43840.  Simplified the testcase even 
more:
<script language="JavaScript">
// this line causes a leak of the plugin host when you use 
//  "document ['thePlugin']"
var _plugins = navigator.plugins;

// this line causes a leak of the embedded plugin and other objects
alert(document ['thePlugin']);

// however, if you comment out the above line and uncomment this line then 
//  all is well
//alert(document.getElementById('thePlugin'));
</script>


*** This bug has been marked as a duplicate of 43840 ***

Comment 4

[Prashant Desale]

Verified Duplicate.