1863087 - [wpt-sync] Sync PR 42950 - [layout] Simplified layout incorrectly reporting adjoining descendants

Status: RESOLVED FIXED

(Core :: Layout: Positioned, task, P4)

Description

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Sync web-platform-tests PR 42950 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/42950
Details from upstream follow.

Ian Kilpatrick <[e-mail]> wrote:

[layout] Simplified layout incorrectly reporting adjoining descendants

When a float existing in an inline formatting context, and that
inline formatting context has simplified layout performed, the
simplified layout wouldn't carry across the
"HasAdjoiningObjectDescendants" flag correctly. This had the side
effect of an incorrect cache-hit, resulting in a mis-placed float.

This copies across the field manually.

Bug: 1493929
Change-Id: I09b7e73aac8721f3c9e1f13eec329454e8c18395

Reviewed-on: https://chromium-review.googlesource.com/5005434
WPT-Export-Revision: 0ee6d6a408c6eb3acd94c00cb48f55be8237d508

Comment 1

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Pushed to try (stability) https://treeherder.mozilla.org/#/jobs?repo=try&revision=018c6d2b9ce7b288a36ca2be0c437a54a5f76ed3

Comment 2

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

CI Results

Ran 9 Firefox configurations based on mozilla-central, and Firefox, Chrome, and Safari on GitHub CI

Total 1 tests

Status Summary

Firefox

PASS: 1

Chrome

FAIL: 1

Safari

PASS: 1

Links

Gecko CI (Treeherder)
GitHub PR Head
GitHub PR Base

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/435caabe740a
[wpt PR 42950] - [layout] Simplified layout incorrectly reporting adjoining descendants, a=testonly

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/47ab932cfce2
[wpt PR 42950] - [layout] Simplified layout incorrectly reporting adjoining descendants, a=testonly

Comment 5

[Sandor Molnar[:smolnar]]

https://hg.mozilla.org/mozilla-central/rev/47ab932cfce2