Bug 271946 – Inconsistent output of Function.prototype.toString for accessor properties

• Component: JavaScriptCore
• Status: RESOLVED FIXED

[Sosuke Suzuki]

Since `RegExp.input` is an accessor property, it is expected that the result of `Function.prototype.toString` would include "get" or "set, but JSC doesn't do that[1].

```js
const regExpInputGetter = Object.getOwnPropertyDescriptor(RegExp, "input").get;

print(Function.prototype.toString.call(regExpInputGetter));
// Actual:
// function input() {
//     [native code]
// }
// Expected:
// function get input() {
//     [native code]
// }
```

On the other hand, it returns expected string for  properties like `RegExp.prototype.unicode`:

```js
const regExpPrototypeUnicodeGetter = Object.getOwnPropertyDescriptor(RegExp.prototype, "unicode").get;

print(Function.prototype.toString.call(regExpPrototypeUnicodeGetter));
// function get unicode() {
//    [native code]
// }
```

[1]: https://tc39.es/ecma262/#sec-function.prototype.tostring

[Sosuke Suzuki]

Pull request: https://github.com/WebKit/WebKit/pull/26660

[EWS]

Committed 276904@main (1ff045b365bb): <https://commits.webkit.org/276904@main>

Reviewed commits have been landed. Closing PR #26660 and removing active labels.

[Radar WebKit Bug Importer]

<rdar://problem/125739577>

[Mark Lam]

Reopened Bugzilla.
Breaks https://www.tax.ny.gov/online/., tracking revert in https://bugs.webkit.org/show_bug.cgi?id=274225.

[Mark Lam]

Instead of re-opening this old bug, let's track the re-landing of this change (along with https://bugs.webkit.org/show_bug.cgi?id=272082) in https://bugs.webkit.org/show_bug.cgi?id=274224.

[Mark Lam]

Reverted in 278825@main (see https://bugs.webkit.org/show_bug.cgi?id=274225). Please work on the fix for re-landing in https://bugs.webkit.org/show_bug.cgi?id=274224.