Bug 255296 – [JSC] Disable fp-contract explicitly for Date math

• Component: JavaScriptCore
• Status: RESOLVED FIXED

[Robert Jenner]

test/built-ins/Date/UTC/fp-evaluation-order.js

is a constant failure in default and strict mode for MacOS Ventura Release. 


HISTORY:
https://build.webkit.org/#/builders/760

FAILURE OUTPUT:
FAIL test/built-ins/Date/UTC/fp-evaluation-order.js (default)
Full Output:
Exception: Test262Error: precision in MakeDate Expected SameValue(«34448384», «34447360») to be true
FAIL test/built-ins/Date/UTC/fp-evaluation-order.js (strict mode)
Full Output:
Exception: Test262Error: precision in MakeDate Expected SameValue(«34448384», «34447360») to be true

[Radar WebKit Bug Importer]

<rdar://problem/107895685>

[Robert Jenner]

The Xcode version, MacOS version, and the timezone database are all the same between the first failure and the last known time these were passing.

[Robert Jenner]

So while the bots did not get upgraded at the point this started to fail, the builder absolutely did:


Last passing:
https://build.webkit.org/#/builders/706/builds/5212

First failing:
https://build.webkit.org/#/builders/706/builds/5219

So it appears that when we upgraded the builders and testers to macOS Ventura 13.3, and Xcode 14.3 it introduced this regression.

[EWS]

Test gardening commit 263043@main (46597f4b1c6d): <https://commits.webkit.org/263043@main>

Reviewed commits have been landed. Closing PR #12827 and removing active labels.

[Yusuke Suzuki]

Pull request: https://github.com/WebKit/WebKit/pull/14280

[EWS]

Committed 264453@main (c0dd96832e9f): <https://commits.webkit.org/264453@main>

Reviewed commits have been landed. Closing PR #14280 and removing active labels.