[Webkit-unassigned] [Bug 171543] New: [ES6] Arrow function. Issue in access to this after eval('super()') within constructor

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=171543

            Bug ID: 171543
           Summary: [ES6] Arrow function. Issue in access to this after
                    eval('super()') within constructor
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: gskachkov at gmail.com

Hmm, during investigation error 171274 I faced in error in binding `this` & superCall in arrow function.
```
class A extends Object {
    constructor () {
        var arrow = () => { eval('super()'); print(this.id);} 
        arrow();
    }
};

new A // ReferenceError: Cannot access uninitialized variable. But should be OK.
```
Before I was sure that we always load `this` from virtual scope in arrow function within constructor, but it is not true

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