Bug 217641

Summary:	[ macOS iOS Debug ] imported/w3c/web-platform-tests/xhr/event-timeout.any.worker.html is a flaky failure
Product:	WebKit	Reporter:	Hector Lopez <hector_i_lopez>
Component:	New Bugs	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	cdumez, webkit-bot-watchers-bugzilla, webkit-bug-importer, youennf
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Hector Lopez 2020-10-12 17:23:11 PDT

imported/w3c/web-platform-tests/xhr/event-timeout.any.worker.html

Test is a flaky failure according to history on macOS Debug and iOS Debug. First occurrence of failure on macOS is at r267227 and on iOS is at r267719

History:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fxhr%2Fevent-timeout.any.worker.html&platform=ios&platform=mac&limit=50000&style=debug

Diff:

--- /Volumes/Data/slave/catalina-debug-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/xhr/event-timeout.any.worker-expected.txt
+++ /Volumes/Data/slave/catalina-debug-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/xhr/event-timeout.any.worker-actual.txt
@@ -1,3 +1,3 @@
 
-PASS XMLHttpRequest: timeout event
+FAIL XMLHttpRequest: timeout event assert_unreached: ontimeout not called. Reached unreachable code

Comment 1 Radar WebKit Bug Importer 2020-10-12 17:23:31 PDT

<rdar://problem/70230801>

Comment 2 Hector Lopez 2020-10-12 17:38:20 PDT

Test expectation while investigated:

https://trac.webkit.org/changeset/268380/webkit