690340 - 336960-1.html still crashes [@ nsFrameLoader::Show] when loaded from a resource:// url

Status: RESOLVED WONTFIX

(Core :: XBL, defect)

Description

[Martijn Wargers (dead)]

When loading that crashtest from a resource:// url, I crash with Fennec trunk on Windows desktop. I assume this is probably also the case with Firefox.

I guess I could make a simple extension that would let you load that crashtest like this: resource://crashtest/336960-1.html
I can do that, if wanted.

https://crash-stats.mozilla.com/report/index/97c64492-fa38-4571-8dff-6d9f62110929
0 	xul.dll 	nsFrameLoader::Show 	content/base/src/nsFrameLoader.cpp:827
1 	xul.dll 	nsSubDocumentFrame::ShowViewer 	layout/generic/nsSubDocumentFrame.cpp:232
2 	xul.dll 	AsyncFrameInit::Run 	layout/generic/nsSubDocumentFrame.cpp:149
3 	xul.dll 	nsContentUtils::RemoveScriptBlocker 	content/base/src/nsContentUtils.cpp:4402
4 	xul.dll 	PresShell::FlushPendingNotifications 	layout/base/nsPresShell.cpp:3980
5 	xul.dll 	nsDocument::FlushPendingNotifications 	content/base/src/nsDocument.cpp:6318
6 	xul.dll 	nsDocument::FlushPendingNotifications 	content/base/src/nsDocument.cpp:6313
7 	xul.dll 	nsDocLoader::DocLoaderIsEmpty 	uriloader/base/nsDocLoader.cpp:806
8 	xul.dll 	nsDocLoader::OnStopRequest 	uriloader/base/nsDocLoader.cpp:736
9 	xul.dll 	nsLoadGroup::RemoveRequest 	netwerk/base/src/nsLoadGroup.cpp:734
10 	xul.dll 	nsDocument::DoUnblockOnload 	content/base/src/nsDocument.cpp:7225
11 	xul.dll 	nsDocument::UnblockOnload 	content/base/src/nsDocument.cpp:7167
12 	xul.dll 	nsDocument::DispatchContentLoadedEvents 	content/base/src/nsDocument.cpp:4197
13 	xul.dll 	nsRunnableMethodImpl<void 	obj-firefox/dist/include/nsThreadUtils.h:345
14 	xul.dll 	nsThread::ProcessNextEvent 	xpcom/threads/nsThread.cpp:631
15 	xul.dll 	NS_ProcessNextEvent_P 	obj-firefox/xpcom/build/nsThreadUtils.cpp:245
16 	xul.dll 	mozilla::ipc::MessagePump::Run 	ipc/glue/MessagePump.cpp:110
17 	xul.dll 	MessageLoop::RunInternal 	ipc/chromium/src/base/message_loop.cc:208
18 	xul.dll 	MessageLoop::RunHandler 	ipc/chromium/src/base/message_loop.cc:201
19 	xul.dll 	MessageLoop::Run 	ipc/chromium/src/base/message_loop.cc:175
20 	xul.dll 	nsBaseAppShell::Run 	widget/src/xpwidgets/nsBaseAppShell.cpp:189
etc..

Comment 1

[Boris Zbarsky [:bzbarsky]]

We're crashing because mDocShell is presumably null.  I guess somewhere under the Create() call or the SetVisibility() call the XBL constructor ran?

Comment 3

[Boris Zbarsky [:bzbarsky]]

XBL is now disabled in Firefox (Bug 1583314) and is in the process of being removed from Gecko (Bug 1566221), so closing bugs requesting changes to its implementation as wontfix.