Bug 259366

Summary:	REGRESSION(265930@main): [ iOS 16 ] TestWTF.WTF_Packed.PackedAlignedPtr is a constant failure
Product:	WebKit	Reporter:	Ben Schwartz <ben_schwartz>
Component:	JavaScriptCore	Assignee:	Justin Michaud <justin_michaud>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	justin_michaud, 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=258999

Description Ben Schwartz 2023-07-20 14:18:19 PDT

TestWTF.WTF_Packed.PackedAlignedPtr

This API test is constantly failing on iOS 16.

HISTORY:

https://results.webkit.org/?suite=api-tests&test=TestWTF.WTF_Packed.PackedAlignedPtr

STDIO:

TestWTF.WTF_Packed.PackedAlignedPtr
        
        /Volumes/Data/worker/Apple-iOS-16-Simulator-Release-Build/build/Tools/TestWebKitAPI/Tests/WTF/Packed.cpp:100
        Expected equality of these values:
          sizeof(key)
            Which is: 6
          4U
            Which is: 4

Comment 1 Radar WebKit Bug Importer 2023-07-20 14:19:14 PDT

<rdar://problem/112620141>

Comment 2 Ben Schwartz 2023-07-20 14:24:06 PDT

I was able to reproduce this bug on iOS Debug ToT running the test as follows:

run-api-tests --ios-simulator TestWTF.WTF_Packed.PackedAlignedPtr

I was able to bisect a regression point. This test reproduced at 265930@main, but it did not reproduce at 265928@main. Changes at 265929@main would not have impacted this issue, so it appears that 265930@main is what caused the failure.

https://commits.webkit.org/265930@main

Comment 3 Justin Michaud 2023-07-20 14:50:08 PDT

Pull request: https://github.com/WebKit/WebKit/pull/15953

Comment 4 EWS 2023-07-24 13:52:56 PDT

Committed 266263@main (00c679a9ae1b): <https://commits.webkit.org/266263@main>

Reviewed commits have been landed. Closing PR #15953 and removing active labels.