Bug 177826

Summary:

REGRESSION(High Sierra): Layout Test fast/multicol/newmulticol/spanner2.html is a flaky image failure on WK1

Product:

WebKit

Reporter:

Matt Lewis <jlewis3>

Component:

New Bugs

Assignee:

Tim Horton <thorton>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

ap, commit-queue, hyatt, ryanhaddad, simon.fraser, thorton, webkit-bug-importer, wenson_hsieh

Priority:

Keywords:

InRadar

Version:

WebKit Nightly Build

Hardware:

Unspecified

OS:

Unspecified

Attachments:

Description	Flags
Patch	none
Patch	none
Patch	none
Patch	none
Patch	none

Matt Lewis

Reported 2017-10-03 11:38:03 PDT

fast/multicol/newmulticol/spanner2.html is a flaky Image Only failure on High Sierra WK1 and Leaks according to the flakiness dashboard. https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fmulticol%2Fnewmulticol%2Fspanner2.html The image diff seems to just be a slight shifting of the image. The build: https://build.webkit.org/results/Apple%20High%20Sierra%20Debug%20WK1%20(Tests)/r222777%20(128)/results.html https://build.webkit.org/results/Apple%20High%20Sierra%20Debug%20WK1%20(Tests)/r222777%20(128)/fast/multicol/newmulticol/spanner2-diffs.html The first failure started with the first build after the High Sierra queues were brought up: https://build.webkit.org/builders/Apple%20High%20Sierra%20Release%20WK1%20(Tests)/builds/0

Attachments
Patch (2.21 KB, patch) 2017-11-28 18:23 PST, Tim Horton	no flags	Details Formatted Diff Diff
Patch (2.41 KB, patch) 2017-11-28 18:24 PST, Tim Horton	no flags	Details Formatted Diff Diff
Patch (3.88 KB, patch) 2017-11-28 18:31 PST, Tim Horton	no flags	Details Formatted Diff Diff
Patch (3.17 KB, patch) 2017-11-28 18:31 PST, Tim Horton	no flags	Details Formatted Diff Diff
Patch (3.88 KB, patch) 2017-11-28 18:32 PST, Tim Horton	no flags	Details Formatted Diff Diff
Show Obsolete (4) View All Add attachment proposed patch, testcase, etc.

Alexey Proskuryakov

Comment 1 2017-10-03 19:50:11 PDT

Does this reproduce when the test is run on its own?

Radar WebKit Bug Importer

Comment 2 2017-10-08 12:36:05 PDT

<rdar://problem/34876498>

Matt Lewis

Comment 3 2017-10-09 11:29:26 PDT

I have been unable to get the test to fail locally.

Alexey Proskuryakov

Comment 4 2017-10-09 12:41:59 PDT

This likely means that a preceding test does something that breaks subsequent tests. Can you check if that's the case, and bisect to the culprit if so?

Tim Horton

Comment 5 2017-11-28 18:23:50 PST

Created attachment 327814 [details] Patch

Tim Horton

Comment 6 2017-11-28 18:24:48 PST

Created attachment 327815 [details] Patch

Tim Horton

Comment 7 2017-11-28 18:31:16 PST

Created attachment 327816 [details] Patch

Tim Horton

Comment 8 2017-11-28 18:31:25 PST

Created attachment 327817 [details] Patch