Bug 225258

Summary:	js/dom/Promise-reject-large-string.html is a flaky failure
Product:	WebKit	Reporter:	Truitt Savell <tsavell>
Component:	WebCore JavaScript	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	jenner, mark.lam, saam, tzagallo, webkit-bot-watchers-bugzilla, webkit-bug-importer, ysuzuki
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=223777 https://bugs.webkit.org/show_bug.cgi?id=242812

Description Truitt Savell 2021-04-30 16:20:05 PDT

js/dom/Promise-reject-large-string.html

I am seeing this more frequently on Apple Silicon systems

History:
https://results.webkit.org/?suite=layout-tests&test=js%2Fdom%2FPromise-reject-large-string.html

Diff:
--- /Volumes/Data/worker/bigsur-release-applesilicon-tests-wk2/build/layout-test-results/js/dom/Promise-reject-large-string-expected.txt
+++ /Volumes/Data/worker/bigsur-release-applesilicon-tests-wk2/build/layout-test-results/js/dom/Promise-reject-large-string-actual.txt
@@ -1,4 +1,3 @@
-CONSOLE MESSAGE: Unhandled Promise Rejection: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...
 PASS successfullyParsed is true
 
 TEST COMPLETE

Comment 1 Radar WebKit Bug Importer 2021-04-30 16:20:47 PDT

<rdar://problem/77403503>

Comment 2 Truitt Savell 2021-04-30 16:21:17 PDT

This was introduced in https://trac.webkit.org/changeset/275521/webkit

Comment 3 Truitt Savell 2021-04-30 16:34:44 PDT

I was able to reproduce this test using command: 

run-webkit-tests --iterations 2000 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --debug-rwt-logging --no-retry --force --no-build -f js/dom/Promise-reject-large-string.html

Comment 4 Robert Jenner 2021-05-11 11:06:06 PDT

Adding test expectations Pass Failure here while test is reviewed:
https://trac.webkit.org/changeset/277333/webkit

Comment 5 Alexey Proskuryakov 2022-07-15 16:45:00 PDT

This is still happening, close to 100% of the time.