[Webkit-unassigned] [Bug 247438] New: `toString` of a named function is wrong

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=247438

            Bug ID: 247438
           Summary: `toString` of a named function is wrong
           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
print (
    String(function f () {})
);
__________________________

Hello,

The space between `f` and `()` should be retained in the result of toString of the generator function, but JSC removes all the space between them.

Running the input.js with JSC prints

---
$ jsc input.js
f() {}
---

while other engines behave like

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

# GraalJS
$ js input.js
f () {}
---


WebKit version: 615.1.10

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