[ High Sierra+ ] Layout Test svg/animations/svglength-element-removed-crash.svg is flaky

[Truitt Savell]

The following layout test is flaky on High Sierra+

svg/animations/svglength-element-removed-crash.svg

Probable cause:

This test appears to have been failing for the whole history. 

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=svg%2Fanimations%2Fsvglength-element-removed-crash.svg

Diff:
--- /Volumes/Data/slave/highsierra-release-tests-wk1/build/layout-test-results/svg/animations/svglength-element-removed-crash-expected.txt
+++ /Volumes/Data/slave/highsierra-release-tests-wk1/build/layout-test-results/svg/animations/svglength-element-removed-crash-actual.txt
@@ -1 +1 @@
-PASS x = 10
+FAIL: -3 extra live node(s) x = 10

[Truitt Savell]

This test seems like it could be passing again as of around r238966 so issue may be resolved.

[Fujii Hironori]

Another test failure:

Buildbot: builder Apple-BigSur-Debug-WK2-Tests build 7275: 251689@main
https://build.webkit.org/#/builders/23/builds/7275

 svg/animations/svglength-element-removed-crash.svg [ Failure ]

--- /Volumes/Data/worker/Apple-BigSur-Debug-WK2-Tests/build/layout-test-results/svg/animations/svglength-element-removed-crash-expected.txt
+++ /Volumes/Data/worker/Apple-BigSur-Debug-WK2-Tests/build/layout-test-results/svg/animations/svglength-element-removed-crash-actual.txt
@@ -1 +1 @@
-PASS x = 10
+FAIL: -136 extra live node(s) x = 10

[Fujii Hironori]

Created attachment 460698 [details]
Patch

[Fujii Hironori]

Created attachment 460699 [details]
Patch

[Fujii Hironori]

Created attachment 460785 [details]
Patch

[Fujii Hironori]

Comment on attachment 460785 [details]
Patch

Surprisingly, there is no flaky failure recently. We don't need this patch anymore.
https://results.webkit.org/?suite=layout-tests&test=svg%2Fanimations%2Fsvglength-element-removed-crash.svg

[Fujii Hironori]

Closed.