Bug 257697

Summary:	[JSC] delete operator shouldn't perform TDZ checks
Product:	WebKit	Reporter:	Alexey Shvayka <ashvayka>
Component:	JavaScriptCore	Assignee:	Alexey Shvayka <ashvayka>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	All
OS:	All

Description Alexey Shvayka 2023-06-04 16:12:13 PDT

Delete operator (https://tc39.es/ecma262/#sec-delete-operator-runtime-semantics-evaluation) calls into DeleteBinding abstract op, while TDZ check (and throwing ReferenceErrors) happens in GetBindingValue.

Comment 1 Radar WebKit Bug Importer 2023-06-04 16:12:30 PDT

<rdar://problem/110237888>

Comment 2 Alexey Shvayka 2023-06-04 17:44:33 PDT

Pull request: https://github.com/WebKit/WebKit/pull/14661

Comment 3 EWS 2023-06-15 16:04:00 PDT

Committed 265212@main (fca15e410aef): <https://commits.webkit.org/265212@main>

Reviewed commits have been landed. Closing PR #14661 and removing active labels.