Comment #5 on issue 881 by [email protected]: GG crashes FF 3.0.10.0
when uploading image via Wordpress
http://code.google.com/p/gears/issues/detail?id=881
I'm running FF 3.0.5 on XP.
The crash is in newly introduced drag-and-drop related stuff. This code
path executes when simply creating a Gears Factory object. The client page
doesn't have to use the
new drag and drop features to get this crash. That does a lot to explain
the frequency of the crash.
// file dom_utils.cc
nsresult DOMUtils::GetTabNativeWindow(JSContext *js_context,
NativeWindowPtr* window) {
....
nsCOMPtr<nsIBaseWindow> baseWindow(do_QueryInterface(ds, &nr));
if (NS_FAILED(nr)) { return nr; }
nsCOMPtr<nsIWidget> widget;
nr = baseWindow->GetMainWidget(getter_AddRefs(widget));
if (NS_FAILED(nr)) { return nr; }
*window = reinterpret_cast<NativeWindowPtr>(
widget->GetNativeData(NS_NATIVE_WINDOW)); <---- CRASHES HERE
BECAUSE 'widget' IS NULL
return NS_OK;
}
Here's a chunk of the callstack
gears.dll!nsCOMPtr<nsIBaseWindow>::assign_assuming_AddRef(nsIBaseWindow *
newPtr=0x00000001) Line 565 + 0x14 bytes C++
gears.dll!nsCOMPtr<nsIWidget>::operator->() Line 868 + 0x24 bytes
C++
gears.dll!DOMUtils::GetTabNativeWindow(JSContext *
js_context=0x01eb40b0, HWND__ * * window=0x0012f2bc) Line 197 + 0x8
bytes C++
gears.dll!DropTargetInterceptor::Intercept(ModuleEnvironment *
module_environment=0x02a26c00) Line 258 + 0x16 bytes C++
gears.dll!ModuleEnvironment::ModuleEnvironment(SecurityOrigin
security_origin={...}, bool is_worker=false, JsRunnerInterface *
js_runner=0x02a26518,
BrowsingContext * browsing_context=0x00000000) Line 88 + 0x9 bytes C++
gears.dll!ModuleEnvironment::CreateFromDOM() Line 123 + 0x57 bytes
C++
gears.dll!GearsFactory::InitFactoryFromDOM() Line 56 + 0x5 bytes
C++
gears.dll!GearsFactoryConstructor(nsISupports * aOuter=0x00000000, const
nsID & aIID={...}, void * * aResult=0x0012f5f0) Line 239 + 0x83 bytes C++
gears.dll!nsGenericFactory::CreateInstance() + 0x1c bytes C++
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