Bug 215034

Summary:	Date creation methods incorrectly clip to Int32
Product:	WebKit	Reporter:	me
Component:	JavaScriptCore	Assignee:	Yusuke Suzuki <ysuzuki>
Status:	NEW ---
Severity:	Normal	CC:	fpizlo, webkit-bug-importer, ysuzuki
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	All
OS:	All

Description me 2020-07-31 14:44:28 PDT

$ eshost -s -e 'Date.UTC(1970, 0, 1, 0, 0, 0, 2**32)'
#### ChakraCore, engine262, engine262+, GraalJS, Moddable XS, QuickJS, SpiderMonkey, V8
4294967296

#### JavaScriptCore
NaN

Relevant code here: https://github.com/WebKit/webkit/blob/de7fb331a9fb6ed6773508765f9498fb12f90b4d/Source/JavaScriptCore/runtime/DateConstructor.cpp#L84-L96

Comment 1 Radar WebKit Bug Importer 2020-08-01 12:59:39 PDT

<rdar://problem/66429109>