247433 2022-11-03 09:09:46 -0700 SyntaxError is thrown when parameter in array pattern and function have same name 2023-10-12 15:09:54 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Local Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 p51lee yijia_huang mark.lam webkit-bug-importer ychris2010-1 ysuzuki oldest_to_newest 1910071 0 p51lee 2022-11-03 09:09:46 -0700 // input.js ( function x ( [ x ] ) { } ( [ ] ) ) ; __________________________________________ Hello, Executing the input.js using JSC throws SyntaxError, but it is expected to be terminated normally. Running the input.js with JSC results in: --- $ jsc input.js Exception: SyntaxError: Duplicate parameter 'x' not allowed in function with destructuring parameters. at input.js:1 --- while other engines behave like: --- # V8 $ node input.js // no error # GraalJS $ js input.js // no error --- WebKit version: 615.1.10 1910936 1 webkit-bug-importer 2022-11-07 16:48:45 -0800 <rdar://problem/102066019> 1911044 2 yijia_huang 2022-11-08 10:19:27 -0800 Pull request: https://github.com/WebKit/WebKit/pull/6257 1911174 3 ews-feeder 2022-11-08 21:54:29 -0800 Committed 256478@main (a44c26d2439a): <https://commits.webkit.org/256478@main> Reviewed commits have been landed. Closing PR #6257 and removing active labels. 1984738 4 ashvayka 2023-10-12 15:09:54 -0700 *** Bug 220517 has been marked as a duplicate of this bug. ***