[Webkit-unassigned] [Bug 274449] New: [JSC] Use `RegExp.prototype[@@split]` slow path if `hasIndices` and `dotAll` getters has been overwritten

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=274449

            Bug ID: 274449
           Summary: [JSC] Use `RegExp.prototype[@@split]` slow path if
                    `hasIndices` and `dotAll` getters has been overwritten
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aosukeke at gmail.com

`RegExp.prototype[@@split]` calls the `hasIndices` and `dotAll` getters via the `flags`
    getter[1]. If these getters are overwritten, observable side effects may occur. However, the fast
    path skips these getter calls.

    [1]: https://tc39.es/ecma262/multipage/text-processing.html#sec-regexp.prototype-@@split

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