Open Bug 1459775 Opened 6 years ago Updated 2 years ago

Intermittent Assertion failure: mIsSome, at /builds/worker/workspace/build/src/obj-firefox/dist/include/mozilla/Maybe.h:474

Categories

(Core :: Graphics: Layers, defect, P5)

Product:
Core
Component:
Graphics: Layers
Type:
defect

Tracking

()

Status:
ASSIGNED
Tracking Flags:
Tracking Status
firefox-esr52 --- unaffected
firefox-esr60 --- unaffected
firefox60 --- unaffected
firefox61 --- fix-optional
firefox62 --- fix-optional

People

(Reporter: intermittent-bug-filer, Assigned: hiro)

References

(Depends on 1 open bug)

Details

(Keywords: assertion, intermittent-failure, regression) 

Filed by: toros [at] mozilla.com

https://treeherder.mozilla.org/logviewer.html#?job_id=177304686&repo=autoland

https://queue.taskcluster.net/v1/task/RVMsFnR6S3W9doDvvn95aw/runs/0/artifacts/public/logs/live_backing.log

[task 2018-05-07T19:18:10.099Z] 19:18:10     INFO - TEST-START | browser/components/extensions/test/browser/browser_ext_tabs_onHighlighted.js
[task 2018-05-07T19:18:10.446Z] 19:18:10     INFO - GECKO(1036) | [Parent 1036, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80040111: file /builds/worker/workspace/build/src/netwerk/protocol/res/SubstitutingProtocolHandler.cpp, line 338
[task 2018-05-07T19:18:10.609Z] 19:18:10     INFO - GECKO(1036) | ++DOCSHELL 0xbe20c000 == 33 [pid = 1036] [id = {09a154d9-02e9-4ac8-8a02-6a95da2e6efd}]
[task 2018-05-07T19:18:10.610Z] 19:18:10     INFO - GECKO(1036) | ++DOMWINDOW == 141 (0xc11c5970) [pid = 1036] [serial = 3504] [outer = (nil)]
[task 2018-05-07T19:18:10.610Z] 19:18:10     INFO - GECKO(1036) | ++DOMWINDOW == 142 (0xda793000) [pid = 1036] [serial = 3505] [outer = 0xc11c5970]
[task 2018-05-07T19:18:10.651Z] 19:18:10     INFO - GECKO(1036) | ++DOMWINDOW == 143 (0xda7d9800) [pid = 1036] [serial = 3506] [outer = 0xc11c5970]
[task 2018-05-07T19:18:10.728Z] 19:18:10     INFO - GECKO(1036) | ++DOMWINDOW == 144 (0xda7dce00) [pid = 1036] [serial = 3507] [outer = 0xc11c5970]
[task 2018-05-07T19:18:10.777Z] 19:18:10     INFO - GECKO(1036) | ++DOCSHELL 0xbca0d400 == 34 [pid = 1036] [id = {bdc9061f-5c69-4f73-9b16-7a409d363dce}]
[task 2018-05-07T19:18:10.777Z] 19:18:10     INFO - GECKO(1036) | ++DOMWINDOW == 145 (0xcb407080) [pid = 1036] [serial = 3508] [outer = (nil)]
[task 2018-05-07T19:18:10.813Z] 19:18:10     INFO - GECKO(1036) | --DOMWINDOW == 5 (0xdf5622e0) [pid = 1183] [serial = 180] [outer = (nil)] [url = about:newtab]
[task 2018-05-07T19:18:10.814Z] 19:18:10     INFO - GECKO(1036) | --DOMWINDOW == 4 (0xdf562410) [pid = 1183] [serial = 177] [outer = (nil)] [url = about:blank]
[task 2018-05-07T19:18:10.870Z] 19:18:10     INFO - GECKO(1036) | ++DOMWINDOW == 146 (0xbb9a2400) [pid = 1036] [serial = 3509] [outer = 0xcb407080]
[task 2018-05-07T19:18:10.947Z] 19:18:10     INFO - GECKO(1036) | ++DOMWINDOW == 147 (0xdb4aaa00) [pid = 1036] [serial = 3510] [outer = 0xcb407080]
[task 2018-05-07T19:18:11.434Z] 19:18:11     INFO - GECKO(1036) | ++DOCSHELL 0xdf21bc00 == 2 [pid = 1183] [id = {aaca529f-0425-4081-bb0f-ca73f6ff7a17}]
[task 2018-05-07T19:18:11.435Z] 19:18:11     INFO - GECKO(1036) | ++DOMWINDOW == 5 (0xdf5622e0) [pid = 1183] [serial = 185] [outer = (nil)]
[task 2018-05-07T19:18:11.551Z] 19:18:11     INFO - GECKO(1036) | ++DOMWINDOW == 6 (0xe9348800) [pid = 1183] [serial = 186] [outer = 0xdf5622e0]
[task 2018-05-07T19:18:11.830Z] 19:18:11     INFO - GECKO(1036) | ++DOMWINDOW == 7 (0xe9347800) [pid = 1183] [serial = 187] [outer = 0xdf5622e0]
[task 2018-05-07T19:18:11.832Z] 19:18:11     INFO - GECKO(1036) | ++DOCSHELL 0xe26a4400 == 2 [pid = 1498] [id = {c135a354-c147-4efd-a6a6-f5f5952c8811}]
[task 2018-05-07T19:18:11.835Z] 19:18:11     INFO - GECKO(1036) | ++DOMWINDOW == 8 (0xf714e970) [pid = 1498] [serial = 150] [outer = (nil)]
[task 2018-05-07T19:18:11.980Z] 19:18:11     INFO - GECKO(1036) | ++DOMWINDOW == 9 (0xe7d41400) [pid = 1498] [serial = 151] [outer = 0xf714e970]
[task 2018-05-07T19:18:12.415Z] 19:18:12     INFO - GECKO(1036) | ++DOMWINDOW == 10 (0xe7d97200) [pid = 1498] [serial = 152] [outer = 0xf714e970]
[task 2018-05-07T19:18:12.804Z] 19:18:12     INFO - GECKO(1036) | ++DOCSHELL 0xe2585000 == 4 [pid = 1086] [id = {a08a81e2-bed5-49e9-b1d8-dd693b886aa3}]
[task 2018-05-07T19:18:12.804Z] 19:18:12     INFO - GECKO(1036) | ++DOMWINDOW == 11 (0xe25e1380) [pid = 1086] [serial = 411] [outer = (nil)]
[task 2018-05-07T19:18:13.014Z] 19:18:13     INFO - GECKO(1036) | ++DOMWINDOW == 12 (0xe1442400) [pid = 1086] [serial = 412] [outer = 0xe25e1380]
[task 2018-05-07T19:18:13.339Z] 19:18:13     INFO - GECKO(1036) | ++DOMWINDOW == 13 (0xe1442600) [pid = 1086] [serial = 413] [outer = 0xe25e1380]
[task 2018-05-07T19:18:13.421Z] 19:18:13     INFO - GECKO(1036) | --DOMWINDOW == 12 (0xe1441200) [pid = 1086] [serial = 404] [outer = (nil)] [url = about:blank]
[task 2018-05-07T19:18:13.444Z] 19:18:13     INFO - GECKO(1036) | --DOCSHELL 0xe257fc00 == 3 [pid = 1086] [id = {f4e3fd73-9f2f-49bd-9dd8-e07153b70a39}]
[task 2018-05-07T19:18:13.445Z] 19:18:13     INFO - GECKO(1036) | --DOCSHELL 0xe7d1c000 == 2 [pid = 1086] [id = {c143fe7a-5bfb-4a8e-914f-f64f19c5e9be}]
[task 2018-05-07T19:18:13.463Z] 19:18:13     INFO - GECKO(1036) | --DOCSHELL 0xcb54c800 == 33 [pid = 1036] [id = {09876075-896d-42e0-bcd5-917a2cfcc130}]
[task 2018-05-07T19:18:14.839Z] 19:18:14     INFO - GECKO(1036) | --DOMWINDOW == 10 (0xe14cb400) [pid = 1158] [serial = 333] [outer = (nil)] [url = about:blank]
[task 2018-05-07T19:18:14.839Z] 19:18:14     INFO - GECKO(1036) | --DOMWINDOW == 9 (0xe14c8a00) [pid = 1158] [serial = 330] [outer = (nil)] [url = about:blank]
[task 2018-05-07T19:18:14.841Z] 19:18:14     INFO - GECKO(1036) | --DOMWINDOW == 8 (0xe14c8400) [pid = 1158] [serial = 331] [outer = (nil)] [url = http://example.net/]
[task 2018-05-07T19:18:14.841Z] 19:18:14     INFO - GECKO(1036) | --DOMWINDOW == 7 (0xe14c9600) [pid = 1158] [serial = 328] [outer = (nil)] [url = about:blank]
[task 2018-05-07T19:18:14.843Z] 19:18:14     INFO - GECKO(1036) | --DOCSHELL 0xde972c00 == 2 [pid = 1158] [id = {7b9c9fef-6a6b-40f7-8b41-ca2b78fadd9f}]
[task 2018-05-07T19:18:14.844Z] 19:18:14     INFO - GECKO(1036) | --DOCSHELL 0xde969000 == 1 [pid = 1158] [id = {a56a64a3-440d-47b6-9a67-24b7f0d18ae4}]
[task 2018-05-07T19:18:15.188Z] 19:18:15     INFO - GECKO(1036) | Assertion failure: mIsSome, at /builds/worker/workspace/build/src/obj-firefox/dist/include/mozilla/Maybe.h:474
[task 2018-05-07T19:18:15.188Z] 19:18:15     INFO - GECKO(1036) | #01: mozilla::Maybe<float>::operator* [mfbt/Maybe.h:474]
[task 2018-05-07T19:18:15.190Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.191Z] 19:18:15     INFO - GECKO(1036) | #02: mozilla::layers::ForEachNode<mozilla::layers::ForwardIterator, mozilla::layers::Layer*, mozilla::layers::SampleAnimations(mozilla::layers::Layer*, mozilla::layers::CompositorAnimationStorage*, mozilla::TimeStamp)::<lambda(mozilla::layers::Layer*)>, mozilla::layers::ForEachNode(Node, const PreAction&) [with Iterator = mozilla::layers::ForwardIterator; Node = mozilla::layers::Layer*; PreAction = mozilla::layers::SampleAnimations(mozilla::layers::Layer*, mozilla::layers::CompositorAnimationStorage*, mozilla::TimeStamp)::<lambda(mozilla::layers::Layer*)>]::<lambda(mozilla::layers::Layer*)> > [gfx/layers/composite/AsyncCompositionManager.cpp:715]
[task 2018-05-07T19:18:15.192Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.195Z] 19:18:15     INFO - GECKO(1036) | #03: mozilla::layers::ForEachNode<mozilla::layers::ForwardIterator, mozilla::layers::Layer*, mozilla::layers::SampleAnimations(mozilla::layers::Layer*, mozilla::layers::CompositorAnimationStorage*, mozilla::TimeStamp)::<lambda(mozilla::layers::Layer*)>, mozilla::layers::ForEachNode(Node, const PreAction&) [with Iterator = mozilla::layers::ForwardIterator; Node = mozilla::layers::Layer*; PreAction = mozilla::layers::SampleAnimations(mozilla::layers::Layer*, mozilla::layers::CompositorAnimationStorage*, mozilla::TimeStamp)::<lambda(mozilla::layers::Layer*)>]::<lambda(mozilla::layers::Layer*)> > [gfx/layers/TreeTraversal.h:43]
[task 2018-05-07T19:18:15.196Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.198Z] 19:18:15     INFO - GECKO(1036) | #04: mozilla::layers::ForEachNode<mozilla::layers::ForwardIterator, mozilla::layers::Layer*, mozilla::layers::SampleAnimations(mozilla::layers::Layer*, mozilla::layers::CompositorAnimationStorage*, mozilla::TimeStamp)::<lambda(mozilla::layers::Layer*)>, mozilla::layers::ForEachNode(Node, const PreAction&) [with Iterator = mozilla::layers::ForwardIterator; Node = mozilla::layers::Layer*; PreAction = mozilla::layers::SampleAnimations(mozilla::layers::Layer*, mozilla::layers::CompositorAnimationStorage*, mozilla::TimeStamp)::<lambda(mozilla::layers::Layer*)>]::<lambda(mozilla::layers::Layer*)> > [gfx/layers/TreeTraversal.h:43]
[task 2018-05-07T19:18:15.199Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.200Z] 19:18:15     INFO - GECKO(1036) | #05: mozilla::layers::ForEachNode<mozilla::layers::ForwardIterator, mozilla::layers::Layer*, mozilla::layers::SampleAnimations(mozilla::layers::Layer*, mozilla::layers::CompositorAnimationStorage*, mozilla::TimeStamp)::<lambda(mozilla::layers::Layer*)>, mozilla::layers::ForEachNode(Node, const PreAction&) [with Iterator = mozilla::layers::ForwardIterator; Node = mozilla::layers::Layer*; PreAction = mozilla::layers::SampleAnimations(mozilla::layers::Layer*, mozilla::layers::CompositorAnimationStorage*, mozilla::TimeStamp)::<lambda(mozilla::layers::Layer*)>]::<lambda(mozilla::layers::Layer*)> > [gfx/layers/TreeTraversal.h:43]
[task 2018-05-07T19:18:15.202Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.203Z] 19:18:15     INFO - GECKO(1036) | #06: mozilla::layers::AsyncCompositionManager::TransformShadowTree [gfx/layers/composite/AsyncCompositionManager.cpp:758]
[task 2018-05-07T19:18:15.203Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.205Z] 19:18:15     INFO - GECKO(1036) | #07: mozilla::layers::CompositorBridgeParent::CompositeToTarget [gfx/layers/ipc/CompositorBridgeParent.cpp:1036]
[task 2018-05-07T19:18:15.205Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.206Z] 19:18:15     INFO - GECKO(1036) | #08: mozilla::layers::CompositorVsyncScheduler::Composite [gfx/layers/ipc/CompositorVsyncScheduler.cpp:245]
[task 2018-05-07T19:18:15.216Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.218Z] 19:18:15     INFO - GECKO(1036) | #09: mozilla::detail::RunnableMethodImpl<mozilla::layers::CompositorVsyncScheduler*, void (mozilla::layers::CompositorVsyncScheduler::*)(mozilla::TimeStamp), true, (mozilla::RunnableKind)1u, mozilla::TimeStamp>::Run [xpcom/threads/nsThreadUtils.h:1165]
[task 2018-05-07T19:18:15.220Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.221Z] 19:18:15     INFO - GECKO(1036) | #10: MessageLoop::RunTask [xpcom/base/nsCOMPtr.h:638]
[task 2018-05-07T19:18:15.228Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.230Z] 19:18:15     INFO - GECKO(1036) | #11: MessageLoop::DeferOrRunPendingTask [ipc/chromium/src/base/message_loop.cc:460]
[task 2018-05-07T19:18:15.237Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.238Z] 19:18:15     INFO - GECKO(1036) | #12: MessageLoop::DoWork [ipc/chromium/src/base/message_loop.cc:535]
[task 2018-05-07T19:18:15.240Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.242Z] 19:18:15     INFO - GECKO(1036) | #13: base::MessagePumpDefault::Run [ipc/chromium/src/base/message_pump_default.cc:37]
[task 2018-05-07T19:18:15.242Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.245Z] 19:18:15     INFO - GECKO(1036) | #14: MessageLoop::RunInternal [ipc/chromium/src/base/message_loop.cc:327]
[task 2018-05-07T19:18:15.246Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.247Z] 19:18:15     INFO - GECKO(1036) | #15: MessageLoop::Run [ipc/chromium/src/base/message_loop.cc:298]
[task 2018-05-07T19:18:15.248Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.250Z] 19:18:15     INFO - GECKO(1036) | #16: base::Thread::ThreadMain [ipc/chromium/src/base/thread.cc:184]
[task 2018-05-07T19:18:15.250Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.252Z] 19:18:15     INFO - GECKO(1036) | #17: ThreadFunc [ipc/chromium/src/base/platform_thread_posix.cc:40]
[task 2018-05-07T19:18:15.253Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.255Z] 19:18:15     INFO - GECKO(1036) | #18: libpthread.so.0 + 0x6295
[task 2018-05-07T19:18:15.258Z] 19:18:15     INFO - 
[task 2018-05-07T19:18:15.260Z] 19:18:15     INFO - GECKO(1036) | ExceptionHandler::GenerateDump cloned child 1707
[task 2018-05-07T19:18:15.260Z] 19:18:15     INFO - GECKO(1036) | ExceptionHandler::SendContinueSignalToChild sent continue signal to child
[task 2018-05-07T19:18:15.261Z] 19:18:15     INFO - GECKO(1036) | ExceptionHandler::WaitForContinueSignal waiting for continue signal...
[task 2018-05-07T19:18:15.931Z] 19:18:15     INFO - GECKO(1036) | --DOCSHELL 0xe26ac400 == 1 [pid = 1498] [id = {eb955374-7d5c-456b-9307-5bf6acc1a621}]
[task 2018-05-07T19:18:16.214Z] 19:18:16     INFO - GECKO(1036) | --DOMWINDOW == 11 (0xe25e0c60) [pid = 1086] [serial = 403] [outer = (nil)] [url = http://example.com/]
[task 2018-05-07T19:18:16.544Z] 19:18:16     INFO - GECKO(1036) | Hit MOZ_CRASH(Aborting on channel error.) at /builds/worker/workspace/build/src/ipc/glue/MessageChannel.cpp:2555
[task 2018-05-07T19:18:16.545Z] 19:18:16     INFO - GECKO(1036) | #01: mozilla::ipc::MessageChannel::OnChannelErrorFromLink [ipc/glue/MessageChannel.cpp:2555]
[task 2018-05-07T19:18:16.545Z] 19:18:16     INFO - 
[task 2018-05-07T19:18:16.546Z] 19:18:16     INFO - GECKO(1036) | #02: mozilla::ipc::ProcessLink::OnChannelError [ipc/glue/MessageLink.cpp:389]
[task 2018-05-07T19:18:16.546Z] 19:18:16     INFO - 
[task 2018-05-07T19:18:16.548Z] 19:18:16     INFO - GECKO(1036) | #03: IPC::Channel::ChannelImpl::OnFileCanReadWithoutBlocking [ipc/chromium/src/chrome/common/ipc_channel_posix.cc:805]
[task 2018-05-07T19:18:16.551Z] 19:18:16     INFO - 
[task 2018-05-07T19:18:16.552Z] 19:18:16     INFO - GECKO(1036) | #04: event_process_active_single_queue [ipc/chromium/src/third_party/libevent/event.c:1648]
[task 2018-05-07T19:18:16.555Z] 19:18:16     INFO - 
[task 2018-05-07T19:18:16.556Z] 19:18:16     INFO - GECKO(1036) | #05: event_base_loop [ipc/chromium/src/third_party/libevent/event.c:1741]
[task 2018-05-07T19:18:16.560Z] 19:18:16     INFO - 
[task 2018-05-07T19:18:16.561Z] 19:18:16     INFO - GECKO(1036) | #06: base::MessagePumpLibevent::Run [ipc/chromium/src/base/message_pump_libevent.cc:381]
[task 2018-05-07T19:18:16.562Z] 19:18:16     INFO - 
[task 2018-05-07T19:18:16.563Z] 19:18:16     INFO - GECKO(1036) | #07: MessageLoop::RunInternal [ipc/chromium/src/base/message_loop.cc:327]
[task 2018-05-07T19:18:16.564Z] 19:18:16     INFO - 
[task 2018-05-07T19:18:16.566Z] 19:18:16     INFO - GECKO(1036) | #08: MessageLoop::Run [ipc/chromium/src/base/message_loop.cc:298]
[task 2018-05-07T19:18:16.567Z] 19:18:16     INFO - 
[task 2018-05-07T19:18:16.570Z] 19:18:16     INFO - GECKO(1036) | #09: base::Thread::ThreadMain [ipc/chromium/src/base/thread.cc:184]
[task 2018-05-07T19:18:16.577Z] 19:18:16     INFO - 
[task 2018-05-07T19:18:16.585Z] 19:18:16     INFO - GECKO(1036) | #10: ThreadFunc [ipc/chromium/src/base/platform_thread_posix.cc:40]
[task 2018-05-07T19:18:16.586Z] 19:18:16     INFO - 
[task 2018-05-07T19:18:16.587Z] 19:18:16     INFO - GECKO(1036) | #11: libpthread.so.0 + 0x6295
[task 2018-05-07T19:18:16.592Z] 19:18:16     INFO - 
[task 2018-05-07T19:18:16.594Z] 19:18:16     INFO - GECKO(1036) | Hit MOZ_CRASH(Aborting on channel error.) at /builds/worker/workspace/build/src/ipc/glue/MessageChannel.cpp:2555
[task 2018-05-07T19:18:16.596Z] 19:18:16     INFO - GECKO(1036) | #01: mozilla::ipc::MessageChannel::OnChannelErrorFromLink [ipc/glue/MessageChannel.cpp:2555]
Not an mfbt issue, but with the user of it -- i.e. layers code.
Component: MFBT → Graphics: Layers
It seems to me that this is intermittent.
Flags: needinfo?(hikezoe)
Keywords: intermittent-failure
Summary: Perma-failure GECKO(1036) | Assertion failure: mIsSome, at /builds/worker/workspace/build/src/obj-firefox/dist/include/mozilla/Maybe.h:474 → Intermittent GECKO(1036) | Assertion failure: mIsSome, at /builds/worker/workspace/build/src/obj-firefox/dist/include/mozilla/Maybe.h:474
Oops.  Ni was cleared accidentally.
Flags: needinfo?(hikezoe)
Has Regression Range: --- → yes
Keywords: regression
It seems to be fixed.  Keep looking for a next few days.
Still happens.
There are two places that we clear animations in the animation storage but don't clear animation on the coresponding layer.

I am not sure which one is the problematic place, so I just added ClearCompositorAnimations() in both places.

https://treeherder.mozilla.org/#/jobs?repo=try&revision=f36df290a5bc90b017b8b051859f05ab98cadd3f

It seems to work.
Assignee: nobody → hikezoe
Status: NEW → ASSIGNED
Flags: needinfo?(hikezoe)
On the last try, I did forget to enable the assertion in question. :/
https://treeherder.mozilla.org/#/jobs?repo=try&revision=81914ace6fcf621ae4019fbf1248d0123ad457ee
Now tab layer cache (bug 1176019) has been disabled (bug 1465106).
So, with the assertion in this bug enabled, there is was no failure;
https://treeherder.mozilla.org/#/jobs?repo=try&revision=9af18de35842809608389f40763d94a401ad2f1b

FWIW, here is another try base on a revision that tab layer cache still enabled.  And this try has a patch that adding 
two ClearCompositorAnimations calls soon after ClearById(). But this didn't fix the assertion.
https://treeherder.mozilla.org/#/jobs?repo=try&revision=797121f2a6405149039c20f244df8203c506e54b&selectedJob=180109623
mconley told me that we call PBrowser::RenderLayers with the first argument false when the layer tree cache.  And the function ends up calling LayerManager::ClearCachedResouces().  So, I guess we should clear animations that each layer has.  And also RenderLayers is asynchronous call so it might be a problem.
Marking this fix-optional to remove it from triage, since it is P5.
status-firefox62: affected → fix-optional
Depends on: 1487807
See Also: → 1508096
Summary: Intermittent GECKO(1036) | Assertion failure: mIsSome, at /builds/worker/workspace/build/src/obj-firefox/dist/include/mozilla/Maybe.h:474 → Intermittent Assertion failure: mIsSome, at /builds/worker/workspace/build/src/obj-firefox/dist/include/mozilla/Maybe.h:474
Severity: normal → S3
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