705771 - hangs in nsAttrAndChildArray::Clear()

Status: RESOLVED INCOMPLETE

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

Description

[Andrew McCreight [:mccr8]]

These hangs mostly show up in the CC, but there are a couple in the GC.  I think for the CC, this will be fixed by bug 652781.  This is the only hang I've seen so far in the CC.

The CC stacks all look like this: 
0	nsAttrAndChildArray::Clear
1	nsGenericElement::~nsGenericElement
2	nsHTMLAnchorElement::`scalar deleting destructor'	
3	nsNodeUtils::LastRelease
4	nsGenericElement::Release
5	nsCycleCollector::CollectWhite
https://crash-stats.mozilla.com/report/index/f56364eb-fed5-4fe1-96d0-ed5052111126

One GC stack looks like this:
0	nsAttrAndChildArray::Clear
1	nsImageLoadingContent::~nsImageLoadingContent
2	nsGenericElement::~nsGenericElement
3	nsHTMLImageElement::`scalar deleting destructor'	
4	nsGenericElement::Release
5	DoDeferredRelease<nsISupports* __ptr64>
6	XPCJSRuntime::GCCallback
7	js_GC
https://crash-stats.mozilla.com/report/index/8fc49bae-2ddd-46da-aaa5-5bb992111126

another GC stack looks like this:
0	nsAttrAndChildArray::Clear
1	nsGenericElement::~nsGenericElement
2	nsSVGGraphicElement::~nsSVGGraphicElement	
3	nsSVGPathElement::~nsSVGPathElement	
4	nsSVGPathElement::`scalar deleting destructor'	
5	nsNodeUtils::LastRelease
6	nsGenericElement::Release
7	XPC_WN_NoHelper_Finalize
8	js::gc::Arena::finalize<JSObject>
9	js::gc::FinalizeTypedArenas<JSObject>
10	js::gc::ArenaLists::finalizeObjects
11	SweepPhase
12	MarkAndSweep
13	GCCycle
14	js_GC
https://crash-stats.mozilla.com/report/index/4715cb87-7ac7-40ae-a2f2-c5ac92111126

Comment 1

[Andrew McCreight [:mccr8]]

This style of hang detector seems to be obsolete, so I think it makes sense to close these hangs, and file new reports for things the new hang detector finds.