1741612 - Permafailing /css/cssom/getComputedStyle-detached-subtree.html | getComputedStyle returns no style for element outside the flat tree - assert_equals: expected 0 but got 353 when Gecko 96 merges to Beta on 2021-12-06

Status: VERIFIED FIXED

(Core :: DOM: CSS Object Model, defect)

Description

[Cristian Tuns]

[Tracking Requested - why for this release]:

• Central-as-beta simulation:

• How to run these simulations:

• Failure log: https://treeherder.mozilla.org/logviewer?job_id=358321166&repo=try&lineNumber=2086

[task 2021-11-17T12:38:43.854Z] 12:38:43     INFO - TEST-PASS | /css/cssom/getComputedStyle-detached-subtree.html | getComputedStyle returns no style for element in non-rendered iframe (display: none) from iframe's window 
[task 2021-11-17T12:38:43.854Z] 12:38:43     INFO - TEST-UNEXPECTED-FAIL | /css/cssom/getComputedStyle-detached-subtree.html | getComputedStyle returns no style for element outside the flat tree - assert_equals: expected 0 but got 353
[task 2021-11-17T12:38:43.855Z] 12:38:43     INFO - testNoComputedStyle/<@http://web-platform.test:8000/css/cssom/getComputedStyle-detached-subtree.html:20:18
[task 2021-11-17T12:38:43.857Z] 12:38:43     INFO - Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2087:25
[task 2021-11-17T12:38:43.858Z] 12:38:43     INFO - test@http://web-platform.test:8000/resources/testharness.js:557:30
[task 2021-11-17T12:38:43.858Z] 12:38:43     INFO - testNoComputedStyle@http://web-platform.test:8000/css/cssom/getComputedStyle-detached-subtree.html:16:7
[task 2021-11-17T12:38:43.859Z] 12:38:43     INFO - @http://web-platform.test:8000/css/cssom/getComputedStyle-detached-subtree.html:36:20
[task 2021-11-17T12:38:43.861Z] 12:38:43     INFO - 
[task 2021-11-17T12:38:43.861Z] 12:38:43     INFO - TEST-UNEXPECTED-FAIL | /css/cssom/getComputedStyle-detached-subtree.html | getComputedStyle returns no style for descendant outside the flat tree - assert_equals: expected 0 but got 353
[task 2021-11-17T12:38:43.863Z] 12:38:43     INFO - testNoComputedStyle/<@http://web-platform.test:8000/css/cssom/getComputedStyle-detached-subtree.html:20:18
[task 2021-11-17T12:38:43.865Z] 12:38:43     INFO - Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2087:25
[task 2021-11-17T12:38:43.866Z] 12:38:43     INFO - test@http://web-platform.test:8000/resources/testharness.js:557:30
[task 2021-11-17T12:38:43.867Z] 12:38:43     INFO - testNoComputedStyle@http://web-platform.test:8000/css/cssom/getComputedStyle-detached-subtree.html:16:7
[task 2021-11-17T12:38:43.869Z] 12:38:43     INFO - @http://web-platform.test:8000/css/cssom/getComputedStyle-detached-subtree.html:39:20
[task 2021-11-17T12:38:43.870Z] 12:38:43     INFO - .
[task 2021-11-17T12:38:43.871Z] 12:38:43     INFO - TEST-OK | /css/cssom/getComputedStyle-detached-subtree.html | took 976ms

Emilio, this seems to be caused by Bug 1483798.

Comment 1

[Emilio Cobos Álvarez (:emilio)]

Attachment: Bug 1741612 - Set layout.css.computed-style.styles-outside-flat-tree=false in getComputedStyle-detached-subtree.html.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/8ce662d1dd0e
Set layout.css.computed-style.styles-outside-flat-tree=false in getComputedStyle-detached-subtree.html.

Comment 3

[Sandor Molnar[:smolnar]]

https://hg.mozilla.org/mozilla-central/rev/8ce662d1dd0e

Comment 4

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

Verified fixed in today's central-as-beta simulation.

Comment 5

[Intermittent Failures Robot]

6 failures in 3259 pushes (0.002 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• try: 6

Platform and build breakdown:

• linux1804-64-asan-qr: 5
  • opt: 5
• android-em-7-0-x86_64-shippable-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1741612&startday=2021-11-15&endday=2021-11-21&tree=all