[webkit-help] HTMLAudioElement not deleted on leaving page

[Antonio Gomes]

Please file a bug in bugs.webkit.org and attach your reduced test case. It
is also important to mention:

- any non obvious step needed to reproduce this;
- what version (revision, release, etc) of webkit you use;
- and what webkit port.

Cheers,

On Mon, Mar 5, 2012 at 1:37 PM, Yanov, Andrey <AYanov at luxoft.com> wrote:

>  Hi dev team and everyone else.****
>
> ** **
>
> I’m having an issue I’m trying to figure out.****
>
> I’ve got an HTMLAudioElement created by JS on page cuttherope.ie.****
>
> The element is created and even receives a url to load.****
>
> However, the element is not given a parent, or a sibling, thus is not
> added to any container element.****
>
> As a result, when navigating away from the page, it doesn’t get destroyed
> (since not a part of a DOM tree).****
>
> I have very little idea how JS engine is working, could you please direct
> me where to look next ?****
>
> ** **
>
> I would appreciate any help.****
>
> Here is the stack:****
>
> 38 HTMLAudioElement()
> D:\Prj\wk2\Source\WebCore\html\HTMLAudioElement.cpp:42
> 0xba1a00ef                ****
>
> 37 WebCore::HTMLAudioElement::create()
> D:\Prj\wk2\Source\WebCore\html\HTMLAudioElement.cpp:62
> 0xba1a0610                ****
>
> 36 audioConstructor()
> \home\ayanov\Source\_products\NBT-Debug\DerivedSources\WebCore\HTMLElementFactory.cpp:159
> 0xb9ef37fc  ****
>
> 35 WebCore::HTMLElementFactory::createHTMLElement()
> \home\ayanov\Source\_products\NBT-Debug\DerivedSources\WebCore\HTMLElementFactory.cpp:649
> 0xb9ef59c5 ****
>
> 34 WebCore::HTMLDocument::createElement()
> D:\Prj\wk2\Source\WebCore\html\HTMLDocument.cpp:313
> 0xb97b3115                ****
>
> 33 WebCore::jsDocumentPrototypeFunctionCreateElement()
> \home\ayanov\Source\_products\NBT-Debug\DerivedSources\WebCore\JSDocument.cpp:1911
> 0xb9d4d383                ****
>
> 32 JSC::Interpreter::privateExecute()
> D:\Prj\wk2\Source\JavaScriptCore\interpreter\Interpreter.cpp:4004
> 0xba3ee357                ****
>
> 31 JSC::Interpreter::execute()
> D:\Prj\wk2\Source\JavaScriptCore\interpreter\Interpreter.cpp:831
> 0xba3e0733            ****
>
> 30 JSC::evaluate()
> D:\Prj\wk2\Source\JavaScriptCore\runtime\Completion.cpp:64
> 0xba408bbc             ****
>
> 29 WebCore::JSMainThreadExecState::evaluate()
> D:\Prj\wk2\Source\WebCore\bindings\js\JSMainThreadExecState.h:54
> 0xb9cf7bc7         ****
>
> 28 WebCore::ScriptController::evaluateInWorld()
> D:\Prj\wk2\Source\WebCore\bindings\js\ScriptController.cpp:141
> 0xb9d0bc8e       ****
>
> 27 WebCore::ScriptController::evaluate()
> D:\Prj\wk2\Source\WebCore\bindings\js\ScriptController.cpp:164
> 0xb9d0be16                ****
>
> 26 WebCore::ScriptElement::executeScript()
> D:\Prj\wk2\Source\WebCore\dom\ScriptElement.cpp:285
> 0xba007bb3                ****
>
> 25 WebCore::HTMLScriptRunner::executePendingScriptAndDispatchEvent()
> D:\Prj\wk2\Source\WebCore\html\parser\HTMLScriptRunner.cpp:139
> 0xb9818b6c     ****
>
> 24 WebCore::HTMLScriptRunner::executeParsingBlockingScript()
> D:\Prj\wk2\Source\WebCore\html\parser\HTMLScriptRunner.cpp:118
> 0xb98189ff      ****
>
> 23 WebCore::HTMLScriptRunner::executeParsingBlockingScripts()
> D:\Prj\wk2\Source\WebCore\html\parser\HTMLScriptRunner.cpp:195
> 0xb9818eba    ****
>
> 22 WebCore::HTMLScriptRunner::execute()
> D:\Prj\wk2\Source\WebCore\html\parser\HTMLScriptRunner.cpp:178
> 0xb9818e33       ****
>
> 21 WebCore::HTMLDocumentParser::runScriptsForPausedTreeBuilder()
> D:\Prj\wk2\Source\WebCore\html\parser\HTMLDocumentParser.cpp:205
> 0xb9811900            ****
>
> 20 WebCore::HTMLDocumentParser::canTakeNextToken()
> D:\Prj\wk2\Source\WebCore\html\parser\HTMLDocumentParser.cpp:223
> 0xb98119b5            ****
>
> 19 WebCore::HTMLDocumentParser::pumpTokenizer()
> D:\Prj\wk2\Source\WebCore\html\parser\HTMLDocumentParser.cpp:261
> 0xb9811d26            ****
>
> 18 WebCore::HTMLDocumentParser::resumeParsingAfterYield()
> D:\Prj\wk2\Source\WebCore\html\parser\HTMLDocumentParser.cpp:192
> 0xb98117dd            ****
>
> 17 WebCore::HTMLParserScheduler::continueNextChunkTimerFired()
> D:\Prj\wk2\Source\WebCore\html\parser\HTMLParserScheduler.cpp:87
> 0xb98173fb                ****
>
> ** **
>
> ** **
>
> Thank you and have a nice day!****
>
> Andrey Yanov****
>
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-- 
--Antonio Gomes
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