script: Don't always allocate `NodeRareData` when accessing `WeakRangeVec` by mrobinson · Pull Request #46440 · servo/servo

mrobinson · 2026-07-10T13:44:01Z

Previously the code would eagerly allocate NodeRareData when trying to
access a Node's WeakRangeVec (essentially live ranges) during
mutation. Some of the callsites were guarded with calls to
weak_ranges_is_empty, but others were not. This kind of thing can lead
to a lot of extra allocation during DOM mutation. This change splits the
getter into one that returns an Option and another that ensures that
the WeakRangeVec and NodeRareData exist. In addition, some addition
specification text is added naer edit sites.

Finally, a similar optimization is done for remove_mutation_observer.
When there is no rare data there is no mutation observer to remove.

This work might be useful if selection tracking is done via live ranges.

Testing: This should not change observable behavior, so is covered by existing tests.

…eVec` Previously the code would eagerly allocate `NodeRareData` when trying to access a Node's `WeakRangeVec` (essentially live ranges) during mutation. Some of the callsites were guarded with calls to `weak_ranges_is_empty`, but others were not. This kind of thing can lead to a lot of extra allocation during DOM mutation. This change splits the getter into one that returns an `Option` and another that ensures that the `WeakRangeVec` and `NodeRareData` exist. In addition, some addition specification text is added naer edit sites. Finally, a similar optimization is done for `remove_mutation_observer`. When there is no rare data there is no mutation observer to remove. This work might be useful if selection tracking is done via live ranges. Signed-off-by: Martin Robinson <mrobinson@igalia.com>

github-actions · 2026-07-11T08:27:53Z

🔨 Triggering try run (#29146148354) for Linux (WPT)

github-actions · 2026-07-11T09:02:19Z

Test results for linux-wpt from try job (#29146148354):

Flaky unexpected result (38)

OK /IndexedDB/idbdatabase_deleteObjectStore.any.html (#43823)
- PASS [expected FAIL] subtest: Deleted object store's name should be removed from database's list. Attempting to use a deleted IDBObjectStore should throw an InvalidStateError
CRASH [expected OK] /_webgl/conformance/uniforms/no-over-optimization-on-uniform-array-14.html
TIMEOUT [expected OK] /_webgl/conformance/uniforms/no-over-optimization-on-uniform-array-16.html
TIMEOUT [expected OK] /_webgl/conformance2/state/gl-object-get-calls.html
- NOTRUN [expected PASS] subtest: Overall test
OK /cookies/partitioned-cookies/partitioned-cookies-samesite-attribute.https.html (#45255)
- FAIL [expected PASS] subtest: In embedded cross-site contexts, partitioned cookies can only be set with explicit SameSite=None
```
assert_equals: expected 0 but got 3
```
OK /css/css-fonts/matching/font-unicode-PUA.html (#46434)
- PASS [expected FAIL] subtest: PUA character U+F000 is rendered with a non-generic font.
FAIL [expected PASS] /css/css-sizing/dynamic-available-size-iframe.html (#45763)
OK [expected TIMEOUT] /fetch/api/redirect/redirect-keepalive.https.any.html (#32153)
- PASS [expected TIMEOUT] subtest: [keepalive][iframe][load] mixed content redirect; setting up
TIMEOUT [expected OK] /fetch/content-encoding/br/big-br-body.https.any.worker.html
- TIMEOUT [expected PASS] subtest: large br data should be decompressed successfully
```
Test timed out
```
- NOTRUN [expected FAIL] subtest: large br data should be decompressed successfully with byte stream
TIMEOUT [expected OK] /fetch/content-encoding/gzip/big-gzip-body.https.any.worker.html
- TIMEOUT [expected PASS] subtest: large gzip data should be decompressed successfully
```
Test timed out
```
- NOTRUN [expected FAIL] subtest: large gzip data should be decompressed successfully with byte stream
TIMEOUT [expected OK] /fetch/content-encoding/zstd/big-zstd-body.https.any.worker.html
- TIMEOUT [expected PASS] subtest: large zstd data should be decompressed successfully
```
Test timed out
```
- NOTRUN [expected FAIL] subtest: large zstd data should be decompressed successfully with byte stream
OK [expected ERROR] /fetch/fetch-later/quota/same-origin-iframe/multiple-iframes.https.window.html (#35176)
TIMEOUT [expected OK] /fetch/metadata/generated/css-font-face.https.sub.tentative.html
- TIMEOUT [expected PASS] subtest: sec-fetch-site - Same-Origin -> Same-Site
```
Test timed out
```
- NOTRUN [expected PASS] subtest: sec-fetch-site - Same-Origin -> Cross-Site
- NOTRUN [expected FAIL] subtest: sec-fetch-site - Same-Site -> Same Origin
- NOTRUN [expected PASS] subtest: sec-fetch-site - Same-Site -> Same-Site
- NOTRUN [expected PASS] subtest: sec-fetch-site - Same-Site -> Cross-Site
- NOTRUN [expected PASS] subtest: sec-fetch-mode
- NOTRUN [expected PASS] subtest: sec-fetch-dest
- NOTRUN [expected PASS] subtest: sec-fetch-user
- NOTRUN [expected PASS] subtest: sec-fetch-storage-access - Cross-site
- NOTRUN [expected PASS] subtest: sec-fetch-storage-access - Same site
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.html (#29056)
- PASS [expected FAIL] subtest: Cross-origin navigation started from unload handler must be ignored

OK /html/browsers/browsing-the-web/navigating-across-documents/refresh/same-document-refresh.html (#34597)

FAIL [expected PASS] subtest: Same-Document Referrer from Refresh

assert_equals: original page loads expected "http://web-platform.test:8000/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refresh-with-section.sub.html?url=%23section" but got "http://web-platform.test:8000/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refresh-with-section.sub.html?url=%23section#section"

OK /html/browsers/history/the-history-interface/traverse_the_history_2.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
OK /html/browsers/history/the-history-interface/traverse_the_history_5.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
CRASH [expected OK] /html/browsers/history/the-location-interface/assign-with-nested-iframe.html
TIMEOUT [expected ERROR] /html/browsers/history/the-location-interface/location_replace_session_history.html (#41896)

OK /html/browsers/windows/embedded-opener-remove-frame.html (#23867)

FAIL [expected PASS] subtest: opener of discarded auxiliary browsing context

assert_object_equals: property "get" expected function "function opener() {
    [native code]
}" got function "function opener() {
    [native code]
}"

OK /html/semantics/embedded-content/media-elements/media_fragment_seek.html (#24114)
- FAIL [expected PASS] subtest: Video should seek to time specified in media fragment syntax
```
assert_equals: expected 4 but got 0
```
OK [expected TIMEOUT] /html/semantics/embedded-content/media-elements/src_object_blob.html (#40340)
- PASS [expected TIMEOUT] subtest: HTMLMediaElement.srcObject blob
TIMEOUT [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_navigate_other_frame_popup.sub.html (#39702)
- TIMEOUT [expected FAIL] subtest: Sandboxed iframe can not navigate other frame's popup
```
Test timed out
```
OK /html/semantics/forms/form-submission-0/jsurl-form-submit.tentative.html (#36489)
- PASS [expected FAIL] subtest: Verifies that form submissions scheduled inside javascript: urls take precedence over the javascript: url's return value.
TIMEOUT [expected OK] /html/syntax/parsing/html5lib_write_single.html?file=tests14
- TIMEOUT [expected PASS] subtest: <!DOCTYPE html><html><body><xyz:abc></xyz:abc>
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <!DOCTYPE html><html><body><xyz:abc></xyz:abc><span></span>
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <!DOCTYPE html><html><html abc:def=gh><xyz:abc></xyz:abc>
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <!DOCTYPE html><html xml:lang=bar><html xml:lang=foo>
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <!DOCTYPE html><html 123=456>
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <!DOCTYPE html><html 123=456><html 789=012>
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <!DOCTYPE html><html><body 789=012>
```
Test timed out
```
TIMEOUT [expected OK] /html/syntax/parsing/html5lib_write_single.html?file=tricky01
- TIMEOUT [expected PASS] subtest: <b><p>Bold </b> Not bold</p>\nAlso not bold.
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <html>\n<font color=red><i>Italic and Red<p>Italic and Red </font> Just italic.</p> Italic only.</i> Plain\n<p>I should not be red. <font color=red>Red. <i>Italic and red.</p>\n<p>Italic and red. </i> Red.</font> I should not be red.</p>\n<b>Bold <i>Bold and italic</b> Only Italic </i> Plain
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <html><body>\n<p><font size="7">First paragraph.</p>\n<p>Second paragraph.</p></font>\n<b><p><i>Bold and Italic</b> Italic</p>
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <html>\n<dl>\n<dt><b>Boo\n<dd>Goo?\n</dl>\n</html>
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <html><body>\n<label><a><div>Hello<div>World</div></a></label> \n</body></html>
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <table><center> <font>a</center> <img> <tr><td> </td> </tr> </table>
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <table><tr><p><a><p>You should see this text.
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <TABLE>\n<TR>\n<CENTER><CENTER><TD></TD></TR><TR>\n<FONT>\n<TABLE><tr></tr></TABLE>\n</P>\n<a></font><font></a>\nThis page contains an insanely badly-nested tag sequence.
```
Test timed out
```
- NOTRUN [expected PASS] subtest: <html>\n<body>\n<b><nobr><div>This text is in a div inside a nobr</nobr>More text that should not be in the nobr, i.e., the\nnobr should have closed the div inside it implicitly. </b><pre>A pre tag outside everything else.</pre>\n</body>\n</html>
TIMEOUT [expected OK] /html/user-activation/navigation-state-reset-sameorigin.html (#45151)
- TIMEOUT [expected FAIL] subtest: Post-navigation state reset.
```
Test timed out
```
OK /html/webappapis/dynamic-markup-insertion/document-write/iframe_005.html (#43671)
- PASS [expected FAIL] subtest: document.write external script into iframe write back into parent
OK /mixed-content/tentative/autoupgrades/video-upgrade.https.sub.html (#41135)
- FAIL [expected PASS] subtest: Video autoupgraded
```
assert_equals: Length. expected 1 but got Infinity
```
OK /paint-timing/fcp-only/fcp-text-input.html
- PASS [expected FAIL] subtest: Text input should become contentful when its value is non-empty
TIMEOUT [expected OK] /pointerevents/compat/pointerevent_touch-action_two-finger_interaction.html (#44693)
- NOTRUN [expected PASS] subtest: touch two-finger pan on 'touch-action: pan-x pan-y'
- NOTRUN [expected FAIL] subtest: touch two-finger pan on 'touch-action: pinch-zoom'
OK /resource-timing/buffer-full-then-increased.html (#44408)
- PASS [expected FAIL] subtest: Test that overflowing the buffer and immediately increasing its limit does not trigger the resourcetimingbufferfull event
OK /resource-timing/test_resource_timing.https.html (#25216)
- PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (img)
- PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (xmlhttprequest)
CRASH [expected ERROR] /svg/painting/parsing/marker-end-valid.svg
OK /touch-events/mouseevents-after-touchend.tentative.html
- PASS [expected FAIL] subtest: Single tap should cause a click
- PASS [expected FAIL] subtest: Tapping too far points should not cause a dblclick
CRASH [expected OK] /uievents/mouse/mousemove_prevent_default_action.html
OK /upgrade-insecure-requests/gen/sharedworker-module-data.meta/unset/fetch.https.html
- FAIL [expected PASS] subtest: Upgrade-Insecure-Requests: Expects blocked for fetch to cross-http-downgrade origin and downgrade redirection from https context.
```
assert_equals: The resource request should be 'blocked'. expected "blocked" but got "allowed"
```
- FAIL [expected PASS] subtest: Upgrade-Insecure-Requests: Expects blocked for fetch to cross-http-downgrade origin and no-redirect redirection from https context.
```
assert_equals: The resource request should be 'blocked'. expected "blocked" but got "allowed"
```
- FAIL [expected PASS] subtest: Upgrade-Insecure-Requests: Expects blocked for fetch to cross-https origin and downgrade redirection from https context.
```
assert_equals: The resource request should be 'blocked'. expected "blocked" but got "allowed"
```
- FAIL [expected PASS] subtest: Upgrade-Insecure-Requests: Expects blocked for fetch to same-http-downgrade origin and downgrade redirection from https context.
```
assert_equals: The resource request should be 'blocked'. expected "blocked" but got "allowed"
```
- FAIL [expected PASS] subtest: Upgrade-Insecure-Requests: Expects blocked for fetch to same-http-downgrade origin and no-redirect redirection from https context.
```
assert_equals: The resource request should be 'blocked'. expected "blocked" but got "allowed"
```
- FAIL [expected PASS] subtest: Upgrade-Insecure-Requests: Expects blocked for fetch to same-https origin and downgrade redirection from https context.
```
assert_equals: The resource request should be 'blocked'. expected "blocked" but got "allowed"
```

OK /webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html (#22849)

FAIL [expected PASS] subtest: buffer-stitching-2

assert_approx_equals: Stitched sine‑wave buffers at sample rate 43800 sample[24527] |-3671207182336 - -0.9742898344993591| = 3671207182335.026 &gt; 0.0038986 expected -0.9742898344993591 +/- 0.0038986 but got -3671207182336

Stable unexpected results that are known to be intermittent (15)

TIMEOUT /FileAPI/url/url-in-tags-revoke.window.html (#19978)
- PASS [expected TIMEOUT] subtest: Fetching a blob URL immediately before revoking it works in <script> tags.

OK /_webgl/conformance/textures/misc/texture-upload-size.html (#21770)

FAIL [expected PASS] subtest: WebGL test #45

assert_true: Texture was smaller than the expected size 2x2 expected true got false

FAIL [expected PASS] subtest: WebGL test #47

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

FAIL [expected PASS] subtest: WebGL test #49

assert_true: Texture was smaller than the expected size 2x2 expected true got false

FAIL [expected PASS] subtest: WebGL test #51

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

PASS [expected FAIL] subtest: WebGL test #53
PASS [expected FAIL] subtest: WebGL test #55
PASS [expected FAIL] subtest: WebGL test #57
PASS [expected FAIL] subtest: WebGL test #59

FAIL [expected PASS] subtest: WebGL test #61

assert_true: Texture was smaller than the expected size 2x2 expected true got false

FAIL [expected PASS] subtest: WebGL test #63

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

And 6 more unexpected results...

OK /beacon/beacon-basic.https.window.html (#41723)
- FAIL [expected PASS] subtest: Payload size restriction should be accumulated: type = blob
```
assert_false: expected false got true
```
TIMEOUT [expected OK] /credential-management/credentialscontainer-frame-basics.https.html (#39430)
- TIMEOUT [expected FAIL] subtest: navigator.credentials should be undefined in documents generated from data: URLs.
```
Test timed out
```
OK /dom/nodes/moveBefore/iframe-document-preserve.window.html (#43152)
- FAIL [expected PASS] subtest: moveBefore(): cross-origin iframe is preserved: remove new parent
```
assert_equals: iframe does not fire a second load event expected 1 but got 0
```
OK [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/update-the-rendering.html (#24145)
- FAIL [expected TIMEOUT] subtest: "Flush autofocus candidates" should be happen before a scroll event and animation frame callbacks
```
assert_array_equals: animationFrame lengths differ, expected array ["autofocus", "scroll", "animationFrame"] length 3, got ["animationFrame"] length 1
```
TIMEOUT /html/syntax/parsing/html5lib_write.html?file=processing-instructions (#46205)
- TIMEOUT [expected PASS] subtest: <body><?data.v1>
```
Test timed out
```
OK [expected TIMEOUT] /html/syntax/parsing/html5lib_write_single.html?file=processing-instructions (#46206)
OK [expected ERROR] /intersection-observer/v2/animated-opacity.html (#40827)
OK /resource-timing/test_resource_timing.html (#25720)
- PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (iframe)
OK /touch-events/hover-state-caused-by-compatibility-mouse-events.tentative.html (#46277)
- FAIL [expected PASS] subtest: The compatibility mouse events should set :hover, but shouldn't be preserved after the target is replaced: The compatibility mouse events should be fired
```
assert_equals: expected "[{ type: \"mouseover\", target: div.target },{ type: \"mousemove\", target: div.target },{ type: \"mousedown\", target: div.target },{ type: \"mouseup\", target: div.target },{ type: \"click\", target: div.target }]" but got "[]"
```
OK /touch-events/single-tap-when-touchend-listener-use-sync-xhr.html (#41175)
- FAIL [expected PASS] subtest: Click event should be fired when touchend opens synchronous XHR
```
assert_equals: expected "touchend@div, mousedown@div, mouseup@div, click@div" but got "touchend@div"
```
OK [expected TIMEOUT] /trusted-types/trusted-types-navigation.html?11-15 (#44834)
- PASS [expected TIMEOUT] subtest: Navigate a window via area with javascript:-urls in report-only mode.
TIMEOUT [expected OK] /trusted-types/trusted-types-navigation.html?16-20 (#44835)
- TIMEOUT [expected PASS] subtest: Navigate a frame via area with javascript:-urls w/ default policy in enforcing mode.
```
Test timed out
```
- NOTRUN [expected PASS] subtest: Navigate a frame via area with javascript:-urls in report-only mode.
- NOTRUN [expected PASS] subtest: Navigate a frame via area with javascript:-urls w/ default policy in report-only mode.
TIMEOUT [expected OK] /webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.html (#29053)
- TIMEOUT [expected FAIL] subtest: StorageKey: test 3P about:blank window opened from a 3P iframe
```
Test timed out
```

Stable unexpected results (1)

OK /css/css-cascade/layer-font-face-override.html
- FAIL [expected PASS] subtest: @font-face override update with appended sheet 1
```
assert_equals: expected "80px" but got "38.3166666666667px"
```
- FAIL [expected PASS] subtest: @font-face override update with appended sheet 2
```
assert_equals: expected "80px" but got "38.3166666666667px"
```

github-actions · 2026-07-11T09:02:26Z

⚠️ Try run (#29146148354) failed!

mrobinson · 2026-07-13T10:19:53Z

The failure here seems to be #35935.

github-actions · 2026-07-13T10:20:36Z

🔨 Triggering try run (#29242382438) for Linux (WPT)

github-actions · 2026-07-13T11:39:09Z

Test results for linux-wpt from try job (#29242382438):

Flaky unexpected result (46)

OK /IndexedDB/idbdatabase_deleteObjectStore.any.sharedworker.html (#45919)
- PASS [expected FAIL] subtest: Deleted object store's name should be removed from database's list. Attempting to use a deleted IDBObjectStore should throw an InvalidStateError
TIMEOUT [expected OK] /_mozilla/shadow-dom/getrootnode-in-deeply-nested-shadow.html
TIMEOUT [expected OK] /_webgl/conformance/reading/read-pixels-test.html
OK [expected TIMEOUT] /_webgl/conformance/textures/misc/tex-video-using-tex-unit-non-zero.html (#39735)
- PASS [expected NOTRUN] subtest: Overall test
- PASS [expected FAIL] subtest: WebGL test #0
TIMEOUT [expected OK] /_webgl/conformance/uniforms/no-over-optimization-on-uniform-array-06.html
- NOTRUN [expected PASS] subtest: Overall test
TIMEOUT [expected OK] /_webgl/conformance2/sync/sync-webgl-specific.html
CRASH [expected OK] /_webgl/conformance2/wasm/readpixels-2gb-in-4gb-wasm-memory.html
OK /cookies/partitioned-cookies/partitioned-cookies-samesite-attribute.https.html (#45255)
- FAIL [expected PASS] subtest: In embedded cross-site contexts, partitioned cookies can only be set with explicit SameSite=None
```
assert_equals: expected 0 but got 3
```

OK /css/css-grid/alignment/grid-alignment-implies-size-change-010.html

FAIL [expected PASS] subtest: .after 2

assert_equals: 
&lt;div data-expected-width="100" id="item" class=" before after" data-expected-height="100"&gt;XX X&lt;br&gt;X XXX&lt;br&gt;X&lt;br&gt;XX XXX&lt;/div&gt;
height expected 100 but got 80

FAIL [expected PASS] /css/css-sizing/dynamic-available-size-iframe.html (#45763)
CRASH [expected OK] /dom/nodes/NodeList-static-length-getter-tampered-indexOf-3.html
TIMEOUT [expected OK] /fetch/content-encoding/zstd/big-zstd-body.https.any.html
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment.html (#20768)
- FAIL [expected PASS] subtest: Tests that a fragment navigation in the unload handler will not block the initial navigation
```
assert_equals: expected "" but got "#fragment"
```
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.html (#29049)
- PASS [expected FAIL] subtest: Same-origin navigation started from unload handler must be ignored

OK /html/browsers/browsing-the-web/navigating-across-documents/refresh/same-document-refresh.html (#34597)

FAIL [expected PASS] subtest: Same-Document Referrer from Refresh

assert_equals: original page loads expected "http://web-platform.test:8000/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refresh-with-section.sub.html?url=%23section" but got "http://web-platform.test:8000/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refresh-with-section.sub.html?url=%23section#section"

TIMEOUT [expected OK] /html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/form-requestsubmit.html (#44098)
- TIMEOUT [expected FAIL] subtest: Replace before load, triggered by formElement.requestSubmit()
```
Test timed out
```
TIMEOUT /html/browsers/history/the-history-interface/001.html (#12580)
- FAIL [expected PASS] subtest: traversing history must also traverse hash changes
```
assert_equals: (this could cause other failures later on) expected "" but got "test"
```
OK /html/browsers/history/the-history-interface/traverse_the_history_3.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
OK /html/browsers/history/the-history-interface/traverse_the_history_4.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
OK /html/browsers/history/the-history-interface/traverse_the_history_5.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
TIMEOUT [expected ERROR] /html/browsers/history/the-location-interface/location_replace_session_history.html (#41896)

OK /html/browsers/windows/embedded-opener-remove-frame.html (#23867)

FAIL [expected PASS] subtest: opener of discarded auxiliary browsing context

assert_object_equals: property "get" expected function "function opener() {
    [native code]
}" got function "function opener() {
    [native code]
}"

OK /html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html (#29087)
- FAIL [expected PASS] subtest: <dialog>-contained autofocus element gets focused when the dialog is shown
```
promise_test: Unhandled rejection with value: object "TypeError: can't access property "innerHTML", w.document.body is null"
```

OK /html/semantics/embedded-content/media-elements/seeking/seek-to-currentTime.html (#46014)

FAIL [expected PASS] subtest: seek to currentTime

assert_array_equals: fired events lengths differ, expected array ["seeking", "timeupdate", "seeked"] length 3, got ["seeking", "timeupdate", "timeupdate", "seeked"] length 4

OK /html/semantics/embedded-content/the-iframe-element/iframe-loading-lazy-reload-location-reload.html (#32595)
- FAIL [expected PASS] subtest: Reloading iframe loading='lazy' before it is loaded: location.reload
```
uncaught exception: Error: assert_equals: expected "http://web-platform.test:8000/html/semantics/embedded-content/the-iframe-element/support/blank.htm?src" but got "about:blank"
```
TIMEOUT [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_navigate_other_frame_popup.sub.html (#39702)
- TIMEOUT [expected FAIL] subtest: Sandboxed iframe can not navigate other frame's popup
```
Test timed out
```
OK /html/semantics/forms/form-submission-0/jsurl-form-submit.tentative.html (#36489)
- PASS [expected FAIL] subtest: Verifies that form submissions scheduled inside javascript: urls take precedence over the javascript: url's return value.
TIMEOUT [expected OK] /html/syntax/parsing/html5lib_write.html?file=namespace-sensitivity
- TIMEOUT [expected PASS] subtest: <body><table><tr><td><svg><td><foreignObject><span></td>Foo
```
Test timed out
```
TIMEOUT [expected OK] /html/syntax/parsing/html5lib_write.html?file=scriptdata01
- TIMEOUT [expected PASS] subtest: FOO<script>'Hello'</script>BAR
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: FOO<script></script>BAR
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: FOO<script></script >BAR
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: FOO<script></script/>BAR
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: FOO<script></script/ >BAR
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: FOO<script type="text/plain"></scriptx>BAR
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: FOO<script></script foo=">" dd>BAR
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: FOO<script>'<'</script>BAR
```
Test timed out
```
- NOTRUN [expected PASS] subtest: FOO<script>'<!'</script>BAR
- NOTRUN [expected PASS] subtest: FOO<script>'<!-'</script>BAR
- And 16 more unexpected results...
TIMEOUT [expected OK] /html/syntax/parsing/html5lib_write_single.html?file=scripted_webkit01
- TIMEOUT [expected PASS] subtest: 1<script>document.write("2")</script>3
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: 1<script>document.write("<script>document.write('2')</scr"+ "ipt><script>document.write('3')</scr" + "ipt>")</script>4
```
Test timed out
```
TIMEOUT [expected OK] /html/user-activation/navigation-state-reset-sameorigin.html (#45151)
- TIMEOUT [expected FAIL] subtest: Post-navigation state reset.
```
Test timed out
```
OK /html/webappapis/dynamic-markup-insertion/document-write/iframe_005.html (#43671)
- PASS [expected FAIL] subtest: document.write external script into iframe write back into parent
OK /infrastructure/testdriver/click_iframe.html
- FAIL [expected PASS] subtest: TestDriver click on a document in an iframe
```
Unhandled rejection: assert_unreached: click failed Reached unreachable code
```
TIMEOUT [expected OK] /infrastructure/testdriver/click_nested.html (#43887)
- NOTRUN [expected FAIL] subtest: TestDriver click method with multiple windows and nested iframe
TIMEOUT [expected OK] /pointerevents/compat/pointerevent_touch-action_two-finger_interaction.html (#44693)
- NOTRUN [expected PASS] subtest: touch two-finger pan on 'touch-action: pan-x pan-y'
- NOTRUN [expected FAIL] subtest: touch two-finger pan on 'touch-action: pinch-zoom'

OK /pointerevents/pointerevent_pointercapture_in_frame.html?touch (#45445)

FAIL [expected PASS] subtest: Test touchpointer capture in same-origin frame: Pointer down at inner frame and set pointer capture.
```
assert_true: Timed out waiting for lostpointercapture expected true got false
```

FAIL [expected PASS] subtest:

Test touchpointer capture in same-origin frame: Pointer down at inner frame and set pointer capture to outer frame should not capture.

assert_array_equals: Received events: innerFrame received pointerdown,innerFrame received pointermove,innerFrame received pointerup,innerFrame received lostpointercapture lengths differ, expected array ["innerFrame received pointerdown", "innerFrame received pointermove", "innerFrame received pointerup"] length 3, got ["innerFrame received pointerdown", "innerFrame received pointermove", "innerFrame received pointerup", "innerFrame received lostpointercapture"] length 4

PASS [expected FAIL] subtest: Test touchpointer capture in same-origin frame: Pointerdown with set capture at inner frame, then release on next pointermove.

OK /resize-observer/observer-in-cross-origin-frame.sub.html
- FAIL [expected PASS] subtest: Cross-origin observer responds to explicitly set physical size
```
assert_equals: expected 200 but got 284
```
OK /resource-timing/buffer-full-add-then-clear.html (#40819)
- FAIL [expected PASS] subtest: Test that if the buffer is cleared after entries were added to the secondary buffer, those entries make it into the primary one
```
assert_equals: Number of entries does not match the expected value. expected 3 but got 0
```
OK /sanitizer-api/sanitizer-inert-document.html (#45260)
- FAIL [expected PASS] subtest: Test whether setHTML loads the image.
```
promise_test: Unhandled rejection with value: "The server observed a request. It shouldn't have."
```
- PASS [expected FAIL] subtest: Test whether setHTMLUnsafe loads the image.

OK /touch-events/hover-state-caused-by-compatibility-mouse-events.tentative.html (#46277)

FAIL [expected PASS] subtest: The compatibility mouse events should set :hover: The compatibility mouse events should be fired

assert_equals: expected "[{ type: \"mouseover\", target: div.target },{ type: \"mousemove\", target: div.target },{ type: \"mousedown\", target: div.target },{ type: \"mouseup\", target: div.target },{ type: \"click\", target: div.target }]" but got "[{ type: \"mouseover\", target: div.target },{ type: \"mousemove\", target: div.target },{ type: \"mousedown\", target: div.target }]"

FAIL [expected PASS] subtest:

The compatibility mouse events should set :hover, but shouldn't be preserved after the target is replaced: The compatibility mouse events should be fired

assert_equals: expected "[{ type: \"mouseover\", target: div.target },{ type: \"mousemove\", target: div.target },{ type: \"mousedown\", target: div.target },{ type: \"mouseup\", target: div.target },{ type: \"click\", target: div.target }]" but got "[]"

CRASH [expected OK] /trusted-types/require-trusted-types-for.html
TIMEOUT /trusted-types/trusted-types-navigation.html?06-10 (#37920)
- FAIL [expected PASS] subtest: Navigate a frame via anchor with javascript:-urls in report-only mode.
```
promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""
```
OK [expected TIMEOUT] /trusted-types/trusted-types-navigation.html?26-30 (#38807)
- PASS [expected TIMEOUT] subtest: Navigate a window via form-submission with javascript:-urls in report-only mode.
- PASS [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ default policy in report-only mode.
- PASS [expected NOTRUN] subtest: Navigate a frame via form-submission with javascript:-urls in enforcing mode.
- PASS [expected NOTRUN] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in enforcing mode.

OK /visual-viewport/resize-event-order.html (#41981)

FAIL [expected PASS] subtest: Popup: DOMWindow resize fired before VisualViewport.

assert_equals: expected "window-attribute,window-addEventListener,visualViewport-attribute,visualViewport-addEventListener" but got ""

OK /webdriver/tests/classic/perform_actions/pointer_pen.py
- FAIL [expected PASS] subtest: test_pen_pointer_in_shadow_tree[outer-open]
```
AssertionError
```
- FAIL [expected PASS] subtest: test_pen_pointer_in_shadow_tree[outer-closed]
```
AssertionError
```
- FAIL [expected PASS] subtest: test_pen_pointer_in_shadow_tree[inner-open]
```
AssertionError
```
- FAIL [expected PASS] subtest: test_pen_pointer_in_shadow_tree[inner-closed]
```
AssertionError
```
OK /webxr/xrSession_features_deviceSupport.https.html (#24357)
- FAIL [expected PASS] subtest: Immersive XRSession requests with no supported device should reject
```
assert_unreached: Should have rejected: undefined Reached unreachable code
```

Stable unexpected results that are known to be intermittent (19)

OK /_webgl/conformance/textures/misc/texture-upload-size.html (#21770)

FAIL [expected PASS] subtest: WebGL test #45

assert_true: Texture was smaller than the expected size 2x2 expected true got false

FAIL [expected PASS] subtest: WebGL test #47

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

FAIL [expected PASS] subtest: WebGL test #49

assert_true: Texture was smaller than the expected size 2x2 expected true got false

FAIL [expected PASS] subtest: WebGL test #51

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

PASS [expected FAIL] subtest: WebGL test #53
PASS [expected FAIL] subtest: WebGL test #55
PASS [expected FAIL] subtest: WebGL test #57
PASS [expected FAIL] subtest: WebGL test #59

FAIL [expected PASS] subtest: WebGL test #61

assert_true: Texture was smaller than the expected size 2x2 expected true got false

FAIL [expected PASS] subtest: WebGL test #63

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

And 6 more unexpected results...

OK /beacon/beacon-basic.https.window.html (#41723)
- FAIL [expected PASS] subtest: Payload size restriction should be accumulated: type = string
```
assert_false: expected false got true
```
OK [expected TIMEOUT] /content-security-policy/inheritance/auxiliary-blank-document.html (#44821)
- FAIL [expected TIMEOUT] subtest: window.open() inherits CSPs on transient about:blank.
```
assert_equals: expected "securitypolicyviolation" but got "load"
```
OK /css/css-cascade/layer-font-face-override.html (#35935)
- FAIL [expected PASS] subtest: @font-face override update with appended sheet 1
```
assert_equals: expected "80px" but got "38.3166666666667px"
```
- FAIL [expected PASS] subtest: @font-face override update with appended sheet 2
```
assert_equals: expected "80px" but got "38.3166666666667px"
```
OK /dom/nodes/moveBefore/iframe-document-preserve.window.html (#43152)
- FAIL [expected PASS] subtest: moveBefore(): cross-origin iframe is preserved: remove self via innerHTML
```
assert_equals: iframe does not fire a second load event expected 1 but got 0
```
OK [expected TIMEOUT] /fetch/api/redirect/redirect-keepalive.https.any.html (#32153)
- PASS [expected TIMEOUT] subtest: [keepalive][iframe][load] mixed content redirect; setting up
TIMEOUT /fetch/metadata/generated/css-images.sub.tentative.html (#29047)
- FAIL [expected PASS] subtest: content sec-fetch-site - HTTPS downgrade-upgrade
```
assert_unreached: Reached unreachable code
```
TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
- TIMEOUT [expected FAIL] subtest: Host element with delegatesFocus including no focusable descendants should be skipped
```
Test timed out
```
- NOTRUN [expected FAIL] subtest: Area element should support autofocus
OK /html/semantics/embedded-content/media-elements/media_fragment_seek.html (#24114)
- FAIL [expected PASS] subtest: Video should seek to time specified in media fragment syntax
```
assert_equals: expected 3 but got 0
```
OK [expected TIMEOUT] /html/syntax/parsing/html5lib_write.html?file=processing-instructions (#46205)
TIMEOUT /html/syntax/parsing/html5lib_write_single.html?file=processing-instructions (#46206)
- TIMEOUT [expected FAIL] subtest: <div><?something></div>
```
Test timed out
```
- TIMEOUT [expected FAIL] subtest: <div><?something good></div>
```
Test timed out
```
- TIMEOUT [expected FAIL] subtest: <table><?something></table>
```
Test timed out
```
- TIMEOUT [expected FAIL] subtest: <table><tr><?something></tr></table>
```
Test timed out
```
- TIMEOUT [expected PASS] subtest: <script><?something></script>
```
Test timed out
```
OK [expected ERROR] /intersection-observer/v2/animated-opacity.html (#40827)
OK /preload/prefetch-document.html (#37210)
- FAIL [expected PASS] subtest: different-site document prefetch with 'as=document' should not be consumed
```
assert_equals: expected 2 but got 1
```

OK [expected CRASH] /resource-timing/render-blocking-status-link.html (#41664)

FAIL [expected PASS] subtest: Validate render blocking status of link resources in PerformanceResourceTiming

assert_equals: render blocking status for http://web-platform.test:8000/resource-timing/resources/empty_style.css?stylesheet-head-dynamic-docWrite should be blocking expected (string) "blocking" but got (undefined) undefined

OK /resource-timing/test_resource_timing.https.html (#25216)
- PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (img)
OK /touch-events/single-tap-when-touchend-listener-use-sync-xhr.html (#41175)
- FAIL [expected PASS] subtest: Click event should be fired when touchend opens synchronous XHR
```
assert_equals: expected "touchend@div, mousedown@div, mouseup@div, click@div" but got "touchend@div, mousedown@div"
```
TIMEOUT [expected OK] /trusted-types/trusted-types-navigation.html?16-20 (#44835)
- TIMEOUT [expected PASS] subtest: Navigate a frame via area with javascript:-urls w/ default policy in enforcing mode.
```
Test timed out
```
- NOTRUN [expected PASS] subtest: Navigate a frame via area with javascript:-urls in report-only mode.
- NOTRUN [expected PASS] subtest: Navigate a frame via area with javascript:-urls w/ default policy in report-only mode.
TIMEOUT [expected OK] /trusted-types/trusted-types-navigation.html?31-35 (#38034)
- TIMEOUT [expected PASS] subtest: Navigate a frame via form-submission with javascript:-urls in report-only mode.
```
Test timed out
```
- NOTRUN [expected PASS] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in report-only mode.
- NOTRUN [expected FAIL] subtest: Navigate a window via form-submission with javascript:-urls w/ a default policy throwing an exception in enforcing mode.
- NOTRUN [expected FAIL] subtest: Navigate a window via form-submission with javascript:-urls w/ a default policy throwing an exception in report-only mode.
- NOTRUN [expected FAIL] subtest: Navigate a window via form-submission with javascript:-urls w/ a default policy making the URL invalid in enforcing mode.
TIMEOUT [expected OK] /webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.html (#29053)
- TIMEOUT [expected FAIL] subtest: StorageKey: test 3P about:blank window opened from a 3P iframe
```
Test timed out
```

github-actions · 2026-07-13T11:39:17Z

✨ Try run (#29242382438) succeeded.

mrobinson requested a review from gterzian as a code owner July 10, 2026 13:44

servo-highfive added the S-awaiting-review There is new code that needs to be reviewed. label Jul 10, 2026

mrobinson force-pushed the weak-ranges-efficiency branch from 4407fe3 to e69435d Compare July 10, 2026 13:45

mrobinson added the T-linux-wpt Do a try run of the WPT label Jul 11, 2026

github-actions Bot removed the T-linux-wpt Do a try run of the WPT label Jul 11, 2026

mrobinson added the T-linux-wpt Do a try run of the WPT label Jul 13, 2026

github-actions Bot removed the T-linux-wpt Do a try run of the WPT label Jul 13, 2026

TimvdLippe approved these changes Jul 13, 2026

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servo-highfive removed the S-awaiting-review There is new code that needs to be reviewed. label Jul 13, 2026

TimvdLippe added this pull request to the merge queue Jul 13, 2026

servo-highfive added the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Jul 13, 2026

Merged via the queue into servo:main with commit 96d984d Jul 13, 2026
107 of 108 checks passed

servo-highfive removed the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Jul 13, 2026

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script: Don't always allocate `NodeRareData` when accessing `WeakRangeVec` - #46440

script: Don't always allocate `NodeRareData` when accessing `WeakRangeVec`#46440
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