Bug: Intermittent Assertion failure: aAppPath != aAppToReplacePath || !aAppPath.IsEmpty(), at /builds/worker/checkouts/gecko/widget/cocoa/nsMacDockSupport.mm:310
Status: RESOLVED
Priority: P5
Resolution: FIXED
Created: 2022-02-25 22:20:48+00:00
Resolved: 2022-02-28 12:33:23+00:00

**Filed by:** smolnar [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=369263476&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Qz7p5y4rQmmYiEfT9bYUuw/runs/0/artifacts/public/logs/live_backing.log
**Reftest URL:** https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Qz7p5y4rQmmYiEfT9bYUuw/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---
```
 INFO - TEST-START | browser/components/newtab/test/browser/browser_aboutwelcome_multistage_languageSwitcher.js
[task 2022-02-25T20:50:29.945Z] 20:50:29     INFO - GECKO(2669) | [Child 2678: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 11d332400 == 2 [pid = 2678] [id = 1]
[task 2022-02-25T20:50:29.945Z] 20:50:29     INFO - GECKO(2669) | [Child 2678: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 4 (11d35d0e0) [pid = 2678] [serial = 4] [outer = 0]
[task 2022-02-25T20:50:29.946Z] 20:50:29     INFO - GECKO(2669) | [Child 2678: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 5 (11d0b6800) [pid = 2678] [serial = 5] [outer = 11d35d0e0]
[task 2022-02-25T20:50:29.987Z] 20:50:29     INFO - GECKO(2669) | [Child 2678: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 6 (11d0bd000) [pid = 2678] [serial = 6] [outer = 11d35d0e0]
[task 2022-02-25T20:50:30.003Z] 20:50:30     INFO - GECKO(2669) | console.debug: AboutWelcomeChild:
[task 2022-02-25T20:50:30.006Z] 20:50:30     INFO - GECKO(2669) |   Received page event DOMDocElementInserted
[task 2022-02-25T20:50:30.011Z] 20:50:30     INFO - GECKO(2669) | [2022-02-25T20:50:30Z WARN  webrender::device::gl] Attribute VertexAttribute { name: "aClipDeviceArea", count: 4, kind: F32 } is not found in the shader cs_clip_image. Expected at 1, found at -1
[task 2022-02-25T20:50:30.083Z] 20:50:30     INFO - GECKO(2669) | console.debug: AboutWelcomeParent:
<...>
[task 2022-02-25T20:50:30.406Z] 20:50:30     INFO - GECKO(2669) |   Received content event: AWPage:SPECIAL_ACTION
[task 2022-02-25T20:50:30.407Z] 20:50:30     INFO - GECKO(2669) | Assertion failure: aAppPath != aAppToReplacePath || !aAppPath.IsEmpty(), at /builds/worker/checkouts/gecko/widget/cocoa/nsMacDockSupport.mm:310
[task 2022-02-25T20:50:30.410Z] 20:50:30     INFO -  Initializing stack-fixing for the first stack frame, this may take a while...
[task 2022-02-25T20:50:39.422Z] 20:50:39     INFO - GECKO(2669) | #01: nsMacDockSupport::EnsureAppIsPinnedToDock(nsTSubstring<char16_t> const&, nsTSubstring<char16_t> const&, bool*) [widget/cocoa/nsMacDockSupport.mm:310]
[task 2022-02-25T20:50:39.422Z] 20:50:39     INFO - GECKO(2669) | #02: NS_InvokeByIndex [/opt/worker/tasks/task_164581971444711/build/application/Firefox NightlyDebug.app/Contents/MacOS/XUL + 0x33edfe]
[task 2022-02-25T20:50:39.423Z] 20:50:39     INFO - GECKO(2669) | [Child 2681, IPC I/O Child] WARNING: [12320218C3AFC61E.CFBE15AB1B3E4781]: Ignoring message 'EVENT_MESSAGE' to peer 1.1 due to a missing broker: file /builds/worker/checkouts/gecko/ipc/glue/NodeController.cpp:348
```