It seems that channel is never openen anyway [1]. [1] https://hg.mozilla.org/mozilla-central/rev/37b591f54363#l2.12

doContentSecurityCheck { channelURI: javascript:"<script>parent.passJSUrl%20=%20true</script>" loadingPrincipal: http://mochi.test:8888/tests/dom/jsurl/test/test_bug351633-3.html triggeringPrincipal: http://mochi.test:8888/tests/dom/jsurl/test/test_bug351633-3.html contentPolicyType: 29 securityMode: initalSecurityChecksDone: no enforceSecurity: no } Assertion failure: false (need one securityflag from nsILoadInfo to perform security checks), at /home/ckerschb/moz/mc/dom/security/nsContentSecurityManager.cpp:25 #01: ValidateSecurityFlags (/home/ckerschb/moz/mc/dom/security/nsContentSecurityManager.cpp:25) #02: nsContentSecurityManager::doContentSecurityCheck(nsIChannel*, nsCOMPtr<nsIStreamListener>&) (/home/ckerschb/moz/mc/dom/security/nsContentSecurityManager.cpp:483 (discriminator 3)) #03: nsBaseChannel::AsyncOpen2(nsIStreamListener*) (/home/ckerschb/moz/mc/netwerk/base/nsBaseChannel.cpp:700) #04: nsJSChannel::EvaluateScript() (/home/ckerschb/moz/mc/dom/jsurl/nsJSProtocolHandler.cpp:772) #05: decltype (((*{parm#1}).*{parm#2})()) nsRunnableMethodArguments<>::applyImpl<nsJSChannel, void (nsJSChannel::*)()>(nsJSChannel*, void (nsJSChannel::*)(), mozilla::Tuple<>&, mozilla::IndexSequence<>) (/home/ckerschb/moz/mc-obj-ff-dbg/dist/include/nsThreadUtils.h:708 (discriminator 3)) #06: decltype (applyImpl({parm#1}, {parm#2}, (*this).mArguments, (mozilla::IndexSequence<>)())) nsRunnableMethodArguments<>::apply<nsJSChannel, void (nsJSChannel::*)()>(nsJSChannel*, void (nsJSChannel::*)()) (/home/ckerschb/moz/mc-obj-ff-dbg/dist/include/nsThreadUtils.h:715) #07: nsRunnableMethodImpl<void (nsJSChannel::*)(), true, false>::Run() (/home/ckerschb/moz/mc-obj-ff-dbg/dist/include/nsThreadUtils.h:743) #08: nsThread::ProcessNextEvent(bool, bool*) (/home/ckerschb/moz/mc/xpcom/threads/nsThread.cpp:992 (discriminator 1)) #09: NS_ProcessNextEvent(nsIThread*, bool) (/home/ckerschb/moz/mc/xpcom/glue/nsThreadUtils.cpp:290) #10: mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) (/home/ckerschb/moz/mc/ipc/glue/MessagePump.cpp:98) #11: MessageLoop::RunInternal() (/home/ckerschb/moz/mc/ipc/chromium/src/base/message_loop.cc:234) #12: MessageLoop::RunHandler() (/home/ckerschb/moz/mc/ipc/chromium/src/base/message_loop.cc:227) #13: MessageLoop::Run() (/home/ckerschb/moz/mc/ipc/chromium/src/base/message_loop.cc:206) #14: nsBaseAppShell::Run() (/home/ckerschb/moz/mc/widget/nsBaseAppShell.cpp:158) #15: nsAppStartup::Run() (/home/ckerschb/moz/mc/toolkit/components/startup/nsAppStartup.cpp:284) #16: XREMain::XRE_mainRun() (/home/ckerschb/moz/mc/toolkit/xre/nsAppRunner.cpp:4368) #17: XREMain::XRE_main(int, char**, nsXREAppData const*) (/home/ckerschb/moz/mc/toolkit/xre/nsAppRunner.cpp:4472) #18: XRE_main (/home/ckerschb/moz/mc/toolkit/xre/nsAppRunner.cpp:4580) #19: do_main (/home/ckerschb/moz/mc/browser/app/nsBrowserApp.cpp:220) #20: main (/home/ckerschb/moz/mc/browser/app/nsBrowserApp.cpp:360) #21: __libc_start_main (/build/eglibc-3GlaMS/eglibc-2.19/csu/libc-start.c:321) #22: _start (/home/ckerschb/moz/mc-obj-ff-dbg/dist/bin/firefox)

Problem is: Assertion failure: false, at /home/ckerschb/moz/mc/dom/jsurl/nsJSProtocolHandler.cpp:932 #01: nsJSChannel::SetLoadInfo(nsILoadInfo*) (/home/ckerschb/moz/mc/dom/jsurl/nsJSProtocolHandler.cpp:932) #02: nsJSProtocolHandler::NewChannel2(nsIURI*, nsILoadInfo*, nsIChannel**) (/home/ckerschb/moz/mc/dom/jsurl/nsJSProtocolHandler.cpp:1246) #03: nsIOService::NewChannelFromURIWithProxyFlagsInternal(nsIURI*, nsIURI*, unsigned int, nsILoadInfo*, nsIChannel**) (/home/ckerschb/moz/mc/netwerk/base/nsIOService.cpp:795) #04: nsIOService::NewChannelFromURIWithLoadInfo(nsIURI*, nsILoadInfo*, nsIChannel**) (/home/ckerschb/moz/mc/netwerk/base/nsIOService.cpp:719) #05: NS_NewChannelInternal(nsIChannel**, nsIURI*, nsILoadInfo*, nsILoadGroup*, nsIInterfaceRequestor*, unsigned int, nsIIOService*) (/home/ckerschb/moz/mc/netwerk/base/nsNetUtilInlines.h:226) #06: nsDocShell::DoURILoad(nsIURI*, nsIURI*, bool, nsIURI*, bool, unsigned int, nsISupports*, char const*, nsAString_internal const&, nsIInputStream*, nsIInputStream*, bool, nsIDocShell**, nsIRequest**, bool, bool, bool, nsAString_internal const&, nsIURI*, unsigned int) (/home/ckerschb/moz/mc/docshell/base/nsDocShell.cpp:10727) #07: nsDocShell::InternalLoad(nsIURI*, nsIURI*, bool, nsIURI*, unsigned int, nsISupports*, unsigned int, char16_t const*, char const*, nsAString_internal const&, nsIInputStream*, nsIInputStream*, unsigned int, nsISHEntry*, bool, nsAString_internal const&, nsIDocShell*, nsIURI*, nsIDocShell**, nsIRequest**) (/home/ckerschb/moz/mc/docshell/base/nsDocShell.cpp:10466) #08: nsDocShell::LoadURI(nsIURI*, nsIDocShellLoadInfo*, unsigned int, bool) (/home/ckerschb/moz/mc/docshell/base/nsDocShell.cpp:1561) #09: nsLocation::SetURI(nsIURI*, bool) (/home/ckerschb/moz/mc/dom/base/nsLocation.cpp:273) #10: nsLocation::SetHrefWithBase(nsAString_internal const&, nsIURI*, bool) (/home/ckerschb/moz/mc/dom/base/nsLocation.cpp:539 (discriminator 4)) #11: nsLocation::SetHrefWithContext(JSContext*, nsAString_internal const&, bool) (/home/ckerschb/moz/mc/dom/base/nsLocation.cpp:492) #12: nsLocation::SetHref(nsAString_internal const&) (/home/ckerschb/moz/mc/dom/base/nsLocation.cpp:461) #13: nsLocation::SetHref(nsAString_internal const&, mozilla::ErrorResult&) (/home/ckerschb/moz/mc/dom/base/nsLocation.h:76) #14: set_href (/home/ckerschb/moz/mc-obj-ff-dbg/dom/bindings/LocationBinding.cpp:78) #15: genericCrossOriginSetter (/home/ckerschb/moz/mc-obj-ff-dbg/dom/bindings/LocationBinding.cpp:825) #16: js::CallJSNative(JSContext*, bool (*)(JSContext*, unsigned int, JS::Value*), JS::CallArgs const&) (/home/ckerschb/moz/mc/js/src/jscntxtinlines.h:235) #17: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct) (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:480) #18: InternalCall (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:526) #19: js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, js::AnyInvokeArgs const&, JS::MutableHandle<JS::Value>) (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:544) #20: js::CallSetter(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::Handle<JS::Value>) (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:669) #21: js::SetPropertyIgnoringNamedGetter(JSContext*, JS::Handle<JSObject*>, JS::Handle<jsid>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::Handle<JS::PropertyDescriptor>, JS::ObjectOpResult&) (/home/ckerschb/moz/mc/js/src/proxy/BaseProxyHandler.cpp:245) #22: mozilla::dom::DOMProxyHandler::set(JSContext*, JS::Handle<JSObject*>, JS::Handle<jsid>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::ObjectOpResult&) const (/home/ckerschb/moz/mc/dom/bindings/DOMJSProxyHandler.cpp:218) #23: js::Proxy::set(JSContext*, JS::Handle<JSObject*>, JS::Handle<jsid>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::ObjectOpResult&) (/home/ckerschb/moz/mc/js/src/proxy/Proxy.cpp:332) #24: js::proxy_SetProperty(JSContext*, JS::Handle<JSObject*>, JS::Handle<jsid>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::ObjectOpResult&) (/home/ckerschb/moz/mc/js/src/proxy/Proxy.cpp:588) #25: JSObject::nonNativeSetProperty(JSContext*, JS::Handle<JSObject*>, JS::Handle<jsid>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::ObjectOpResult&) (/home/ckerschb/moz/mc/js/src/jsobj.cpp:1051) #26: js::SetProperty(JSContext*, JS::Handle<JSObject*>, JS::Handle<jsid>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::ObjectOpResult&) (/home/ckerschb/moz/mc/js/src/vm/NativeObject.h:1524) #27: js::Wrapper::set(JSContext*, JS::Handle<JSObject*>, JS::Handle<jsid>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::ObjectOpResult&) const (/home/ckerschb/moz/mc/js/src/proxy/Wrapper.cpp:150) #28: js::CrossCompartmentWrapper::set(JSContext*, JS::Handle<JSObject*>, JS::Handle<jsid>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::ObjectOpResult&) const (/home/ckerschb/moz/mc/js/src/proxy/CrossCompartmentWrapper.cpp:197 (discriminator 1)) #29: js::Proxy::set(JSContext*, JS::Handle<JSObject*>, JS::Handle<jsid>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::ObjectOpResult&) (/home/ckerschb/moz/mc/js/src/proxy/Proxy.cpp:332) #30: js::proxy_SetProperty(JSContext*, JS::Handle<JSObject*>, JS::Handle<jsid>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::ObjectOpResult&) (/home/ckerschb/moz/mc/js/src/proxy/Proxy.cpp:588) #31: JSObject::nonNativeSetProperty(JSContext*, JS::Handle<JSObject*>, JS::Handle<jsid>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::ObjectOpResult&) (/home/ckerschb/moz/mc/js/src/jsobj.cpp:1051) #32: js::SetProperty(JSContext*, JS::Handle<JSObject*>, JS::Handle<jsid>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::ObjectOpResult&) (/home/ckerschb/moz/mc/js/src/vm/NativeObject.h:1524) #33: SetPropertyOperation (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:284) #34: Interpret (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:2624) #35: js::RunScript(JSContext*, js::RunState&) (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:426) #36: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct) (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:498) #37: InternalCall (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:526) #38: js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, js::AnyInvokeArgs const&, JS::MutableHandle<JS::Value>) (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:544) #39: js::fun_apply(JSContext*, unsigned int, JS::Value*) (/home/ckerschb/moz/mc/js/src/jsfun.cpp:1261) #40: js::CallJSNative(JSContext*, bool (*)(JSContext*, unsigned int, JS::Value*), JS::CallArgs const&) (/home/ckerschb/moz/mc/js/src/jscntxtinlines.h:235) #41: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct) (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:480) #42: InternalCall (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:526) #43: js::CallFromStack(JSContext*, JS::CallArgs const&) (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:532) #44: Interpret (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:2831) #45: js::RunScript(JSContext*, js::RunState&) (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:426) #46: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct) (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:498) #47: InternalCall (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:526) #48: js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, js::AnyInvokeArgs const&, JS::MutableHandle<JS::Value>) (/home/ckerschb/moz/mc/js/src/vm/Interpreter.cpp:544) #49: JS::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::HandleValueArray const&, JS::MutableHandle<JS::Value>) (/home/ckerschb/moz/mc/js/src/jsapi.cpp:2926) #50: mozilla::dom::EventHandlerNonNull::Call(JSContext*, JS::Handle<JS::Value>, mozilla::dom::Event&, JS::MutableHandle<JS::Value>, mozilla::ErrorResult&) (/home/ckerschb/moz/mc-obj-ff-dbg/dom/bindings/EventHandlerBinding.cpp:260 (discriminator 1)) #51: void mozilla::dom::EventHandlerNonNull::Call<nsISupports*>(nsISupports* const&, mozilla::dom::Event&, JS::MutableHandle<JS::Value>, mozilla::ErrorResult&, char const*, mozilla::dom::CallbackObject::ExceptionHandling, JSCompartment*) (/home/ckerschb/moz/mc-obj-ff-dbg/dist/include/mozilla/dom/EventHandlerBinding.h:351) #52: mozilla::JSEventHandler::HandleEvent(nsIDOMEvent*) (/home/ckerschb/moz/mc/dom/events/JSEventHandler.cpp:215) #53: mozilla::EventListenerManager::HandleEventSubType(mozilla::EventListenerManager::Listener*, nsIDOMEvent*, mozilla::dom::EventTarget*) (/home/ckerschb/moz/mc/dom/events/EventListenerManager.cpp:1111) #54: mozilla::EventListenerManager::HandleEventInternal(nsPresContext*, mozilla::WidgetEvent*, nsIDOMEvent**, mozilla::dom::EventTarget*, nsEventStatus*) (/home/ckerschb/moz/mc/dom/events/EventListenerManager.cpp:1282) #55: mozilla::EventListenerManager::HandleEvent(nsPresContext*, mozilla::WidgetEvent*, nsIDOMEvent**, mozilla::dom::EventTarget*, nsEventStatus*) (/home/ckerschb/moz/mc-obj-ff-dbg/dist/include/mozilla/EventListenerManager.h:352) #56: mozilla::EventTargetChainItem::HandleEvent(mozilla::EventChainPostVisitor&, mozilla::ELMCreationDetector&) (/home/ckerschb/moz/mc/dom/events/EventDispatcher.cpp:278) #57: mozilla::EventTargetChainItem::HandleEventTargetChain(nsTArray<mozilla::EventTargetChainItem>&, mozilla::EventChainPostVisitor&, mozilla::EventDispatchingCallback*, mozilla::ELMCreationDetector&) (/home/ckerschb/moz/mc/dom/events/EventDispatcher.cpp:381) #58: mozilla::EventDispatcher::Dispatch(nsISupports*, nsPresContext*, mozilla::WidgetEvent*, nsIDOMEvent*, nsEventStatus*, mozilla::EventDispatchingCallback*, nsTArray<mozilla::dom::EventTarget*>*) (/home/ckerschb/moz/mc/dom/events/EventDispatcher.cpp:713) #59: nsDocumentViewer::LoadComplete(nsresult) (/home/ckerschb/moz/mc/layout/base/nsDocumentViewer.cpp:1000) #60: nsDocShell::EndPageLoad(nsIWebProgress*, nsIChannel*, nsresult) (/home/ckerschb/moz/mc/docshell/base/nsDocShell.cpp:7518) #61: nsDocShell::OnStateChange(nsIWebProgress*, nsIRequest*, unsigned int, nsresult) (/home/ckerschb/moz/mc/docshell/base/nsDocShell.cpp:7331) #62: nsDocLoader::DoFireOnStateChange(nsIWebProgress*, nsIRequest*, int&, nsresult) (/home/ckerschb/moz/mc/uriloader/base/nsDocLoader.cpp:1250 (discriminator 1)) #63: nsDocLoader::doStopDocumentLoad(nsIRequest*, nsresult) (/home/ckerschb/moz/mc/uriloader/base/nsDocLoader.cpp:833 (discriminator 2)) #64: nsDocLoader::DocLoaderIsEmpty(bool) (/home/ckerschb/moz/mc/uriloader/base/nsDocLoader.cpp:726) #65: nsDocLoader::ChildDoneWithOnload(nsIDocumentLoader*) (/home/ckerschb/moz/mc/uriloader/base/nsDocLoader.h:202) #66: nsDocLoader::DocLoaderIsEmpty(bool) (/home/ckerschb/moz/mc/uriloader/base/nsDocLoader.cpp:714 (discriminator 2)) #67: nsDocLoader::OnStopRequest(nsIRequest*, nsISupports*, nsresult) (/home/ckerschb/moz/mc/uriloader/base/nsDocLoader.cpp:608 (discriminator 1)) #68: nsLoadGroup::RemoveRequest(nsIRequest*, nsISupports*, nsresult) (/home/ckerschb/moz/mc/netwerk/base/nsLoadGroup.cpp:633) #69: nsDocument::DoUnblockOnload() (/home/ckerschb/moz/mc/dom/base/nsDocument.cpp:9193 (discriminator 1)) #70: nsDocument::UnblockOnload(bool) (/home/ckerschb/moz/mc/dom/base/nsDocument.cpp:9120) #71: nsDocument::DispatchContentLoadedEvents() (/home/ckerschb/moz/mc/dom/base/nsDocument.cpp:5202) #72: decltype (((*{parm#1}).*{parm#2})()) nsRunnableMethodArguments<>::applyImpl<nsDocument, void (nsDocument::*)()>(nsDocument*, void (nsDocument::*)(), mozilla::Tuple<>&, mozilla::IndexSequence<>) (/home/ckerschb/moz/mc-obj-ff-dbg/dist/include/nsThreadUtils.h:708 (discriminator 3)) #73: decltype (applyImpl({parm#1}, {parm#2}, (*this).mArguments, (mozilla::IndexSequence<>)())) nsRunnableMethodArguments<>::apply<nsDocument, void (nsDocument::*)()>(nsDocument*, void (nsDocument::*)()) (/home/ckerschb/moz/mc-obj-ff-dbg/dist/include/nsThreadUtils.h:715) #74: nsRunnableMethodImpl<void (nsDocument::*)(), true, false>::Run() (/home/ckerschb/moz/mc-obj-ff-dbg/dist/include/nsThreadUtils.h:743) #75: nsThread::ProcessNextEvent(bool, bool*) (/home/ckerschb/moz/mc/xpcom/threads/nsThread.cpp:992 (discriminator 1)) #76: NS_ProcessNextEvent(nsIThread*, bool) (/home/ckerschb/moz/mc/xpcom/glue/nsThreadUtils.cpp:290) #77: mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) (/home/ckerschb/moz/mc/ipc/glue/MessagePump.cpp:98) #78: MessageLoop::RunInternal() (/home/ckerschb/moz/mc/ipc/chromium/src/base/message_loop.cc:234) #79: MessageLoop::RunHandler() (/home/ckerschb/moz/mc/ipc/chromium/src/base/message_loop.cc:227) #80: MessageLoop::Run() (/home/ckerschb/moz/mc/ipc/chromium/src/base/message_loop.cc:206) #81: nsBaseAppShell::Run() (/home/ckerschb/moz/mc/widget/nsBaseAppShell.cpp:158) #82: nsAppStartup::Run() (/home/ckerschb/moz/mc/toolkit/components/startup/nsAppStartup.cpp:284) #83: XREMain::XRE_mainRun() (/home/ckerschb/moz/mc/toolkit/xre/nsAppRunner.cpp:4368) #84: XREMain::XRE_main(int, char**, nsXREAppData const*) (/home/ckerschb/moz/mc/toolkit/xre/nsAppRunner.cpp:4472) #85: XRE_main (/home/ckerschb/moz/mc/toolkit/xre/nsAppRunner.cpp:4580) #86: do_main (/home/ckerschb/moz/mc/browser/app/nsBrowserApp.cpp:220) #87: main (/home/ckerschb/moz/mc/browser/app/nsBrowserApp.cpp:360) #88: __libc_start_main (/build/eglibc-3GlaMS/eglibc-2.19/csu/libc-start.c:321)

So we actually can't convert nsJSProtocolHandler to use asyncOpen2() before we have converted docshell to set the right loadInfo args.