Computed Name in Async Method

[Kanguk Lee]

// input.js
class x { async [ "f" ] ( ) { } }
print(x.prototype.f.name);
_____________________

Hello,

Executing the input.js using JSC prints "async", but "f" is expected.

Running the input.js with JSC results in:

---
$ jsc input.js
async
---

while other engines behave like:

---
# V8 (used console.log)
$ node input.js
f

# GraalJS
$ js input.js
f
---


WebKit version: 615.1.10

[Radar WebKit Bug Importer]

<rdar://problem/102206457>

[Kanguk Lee]

I've found more cases below:

let x = { 0 : x => { } , } ; // x["0"].name is "" but "0" is expected.

[Ross Kirsling]

Pull request: https://github.com/WebKit/WebKit/pull/6913

[EWS]

Committed 257114@main (c99e9b77dcb6): <https://commits.webkit.org/257114@main>

Reviewed commits have been landed. Closing PR #6913 and removing active labels.