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Add support for `[AllowResizable]` inputs in `TextDeEncoder`

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Add support for [AllowResizable] inputs in TextDeEncoder #58636

Add support for `[AllowResizable]` inputs in `TextDeEncoder`
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Community-TC Integration / wpt-firefox-nightly-results succeeded Mar 20, 2026 in 4m 9s

Community-TC (pull_request)

Collect results for all tests affected by a pull request in firefox.

Details

View task in Taskcluster | View logs in Taskcluster | View task group in Taskcluster

Task Status

Started: 2026-03-20T09:54:18.407Z
Resolved: 2026-03-20T09:57:15.929Z
Task Execution Time: 2 minutes, 57 seconds, 522 milliseconds
Task Status: completed
Reason Resolved: completed
TaskId: OVM5eUbZQtKzMKNB6GnX3g
RunId: 0

Artifacts

- public/logs/live_backing.log
- public/logs/live.log
- public/results/checkrun.md
- public/results/wpt_report.json.gz
- public/results/wpt_screenshot.txt.gz

WPT Command: python3 ./wpt run --channel=nightly --no-fail-on-unexpected --log-wptreport=../artifacts/wpt_report.json --log-wptscreenshot=../artifacts/wpt_screenshot.txt --affected base_head --log-mach-level=info --log-mach=- -y --no-pause --no-restart-on-unexpected --install-fonts --verify-log-full --no-headless --binary=/home/test/build/firefox/firefox firefox

[taskcluster 2026-03-20 09:54:18.868Z] Task ID: OVM5eUbZQtKzMKNB6GnX3g
[taskcluster 2026-03-20 09:54:18.868Z] Worker ID: 6123995730711455717
[taskcluster 2026-03-20 09:54:18.868Z] Worker Group: us-east4-a
[taskcluster 2026-03-20 09:54:18.868Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-03-20 09:54:18.868Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-03-20 09:54:18.868Z] Worker Version: 46.1.0
[taskcluster 2026-03-20 09:54:18.868Z] Public IP: 136.107.126.100
[taskcluster 2026-03-20 09:54:18.868Z] Hostname: proj-wpt-ci-xzqjf--wtrkxlkimwipnya

ac811f28856d - Started downloading
8f84a9f2102e - Started downloading
ac811f28856d - Downloaded in 0.004 seconds
40516d781e70 - Started downloading
44ebbf800033 - Started downloading
44ebbf800033 - Downloaded in 0.007 seconds
a8884b21e40e - Started downloading
8f84a9f2102e - Downloaded in 0.185 seconds
4f4fb700ef54 - Started downloading
4f4fb700ef54 - Downloaded in 0.002 seconds
79c347416ee8 - Started downloading

...(13713 lines hidden)...

Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16be, 1 byte window (SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16be, 2 byte window (SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16be, 3 byte window (SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16be, 4 byte window (SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16be, 5 byte window (SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: UTF-8 chunk tests (SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:56:35
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:46:13
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-8, 1 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-8, 2 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-8, 3 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-8, 4 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-8, 5 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16le, 1 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16le, 2 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16le, 3 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16le, 4 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16le, 5 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16be, 1 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16be, 2 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16be, 3 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16be, 4 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: utf-16be, 5 byte window (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:38:40
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:25:21
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:23:29
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
  FAIL Streaming decode: UTF-8 chunk tests (resizable SharedArrayBuffer) - TextDecoder.decode: ArrayBufferView branch of (ArrayBufferView or ArrayBuffer) can't be a SharedArrayBuffer or an ArrayBufferView backed by a SharedArrayBuffer
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:56:35
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:46:13
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:22:19
@http://web-platform.test:8000/encoding/textdecoder-streaming.any.js:21:38
 0:44.67 INFO Got 12 unexpected results, with 0 unexpected passes
 0:44.67 wptserve INFO Stopped http server on 127.0.0.1:8000
 0:44.67 wptserve INFO Stopped http server on 127.0.0.1:8002
 0:44.68 wptserve INFO Stopped http server on 127.0.0.1:8001
 0:44.68 wptserve INFO Stopped http server on 127.0.0.1:8003
 0:44.69 wptserve INFO Stopped http server on 127.0.0.1:8443
 0:44.69 wptserve INFO Stopped http server on 127.0.0.1:8445
 0:44.69 wptserve INFO Stopped http server on 127.0.0.1:8444
 0:44.69 wptserve INFO Stopped http server on 127.0.0.1:8446
 0:44.69 wptserve INFO Stopped http server on 127.0.0.1:9000
 0:44.69 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
 0:45.19 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:45.19 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:45.22 INFO Removed font: Ahem.ttf
 0:45.24 INFO Closing logging queue
 0:45.24 INFO queue closed
 0:45.24 INFO Tolerating 12 unexpected results
[taskcluster 2026-03-20 09:57:14.222Z] === Task Finished ===
[taskcluster 2026-03-20 09:57:15.194Z] Successful task run with exit code: 0 completed in 176.329 seconds
View more details on Community-TC Integration