[Webkit-unassigned] [Bug 247426] New: Duplicated name in class static block should be normal but throws SyntaxError

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=247426

            Bug ID: 247426
           Summary: Duplicated name in class static block should be normal
                    but throws SyntaxError
           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: p51lee at kaist.ac.kr

// input.js
class x { static { var x ; } }
________________________________

Hello,

Executing the input.js using JSC throws SyntaxError, but it is expected to terminate normally.

Running the input.js with JSC gives

---
$ jsc input.js
Exception: SyntaxError: Cannot declare a var variable that shadows a let/const/class variable: 'x'.
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

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