Closed Bug 1706610 Opened 3 years ago Closed 3 years ago

[wpt-sync] Sync PR 28620 - Don't fragment clipped overflow.

Categories

(Core :: Layout, task, P4)

Product:
Core
Component:
Layout
Type:
task

Tracking

()

Status:
RESOLVED FIXED
Milestone:
90 Branch
Tracking Flags:
Tracking Status
firefox90 --- fixed

People

(Reporter: wpt-sync, Unassigned)

References

(Blocks 1 open bug,
URL
)

Details

(Whiteboard: [wptsync downstream])

Sync web-platform-tests PR 28620 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/28620
Details from upstream follow.

b'Morten Stenshorne <mstensho@chromium.org>' wrote:

Don't fragment clipped overflow.

When a node clips block-axis overflow, do not insert any further breaks
when reaching the block-end of the node. We don't want it to cause
generation of superfluous fragmentainers whose only purpose is to hold a
zero-size clipped fragment.

This introduces another reason for aborting and re-running layout,
somewhat similar to the early-break mechanism that we already have
(which is involved when we run out of fragmentainer space at a less than
ideal location).

Bug: 1066616, 829028
Change-Id: Ic2f1082319513a7f24cbe114eb93ebdb75c97bfc
Reviewed-on: https://chromium-review.googlesource.com/2843465
WPT-Export-Revision: f1cca4726954ff59d80ca24b93837d92f561f3a5

Component: web-platform-tests → Layout
Product: Testing → Core

CI Results

Ran 15 Firefox configurations based on mozilla-central, and Firefox, Chrome, and Safari on GitHub CI

Total 4 tests

Status Summary

Firefox

OK : 1
PASS: 3
FAIL: 1

Chrome

OK : 1
PASS: 4

Safari

OK : 1
FAIL: 4

Links

Gecko CI (Treeherder)
GitHub PR Head
GitHub PR Base

Details

New Tests That Don't Pass

/css/css-break/overflow-clip-006.html: FAIL (Chrome: PASS, Safari: FAIL)

Pushed by wptsync@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/6f6b61f442ec
[wpt PR 28620] - Don't fragment clipped overflow., a=testonly
https://hg.mozilla.org/integration/autoland/rev/b0111d1dd60e
[wpt PR 28620] - Update wpt metadata, a=testonly

https://hg.mozilla.org/mozilla-central/rev/6f6b61f442ec
https://hg.mozilla.org/mozilla-central/rev/b0111d1dd60e

Status: NEW → RESOLVED
Closed: 3 years ago
status-firefox90: --- → fixed
Resolution: --- → FIXED
Target Milestone: --- → 90 Branch
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