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Message-ID: <5314301.3lsYH2pUt3@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Tue, 19 Nov 2013 00:42:23 +0100
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Subject: Re: What's wrong with arguments.callee ?
Newsgroups: comp.lang.javascript
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Michael Haufe (TNO) wrote:

> On Saturday, November 16, 2013 12:35:47 PM UTC-6, JJ wrote:
>> Sorry, I'm not quite good at English and can't understand which part
>> where data is leaked to G. Could you give a simple example code, please?
> 
> function f(x,y,z){
>     console.log([" x:",x," y:",y," z:",z].join(""))
>     g(arguments);
>     console.log([" x:",x," y:",y," z:",z].join(""))
> }
> 
> function g(args){
>     args[0] = "foo"
>     args[1] = "bar"
>     args[2] = args.callee
> }
> 
> f(1,2,3)

I think you have misplaced your spaces and semicolons.  Anyhow:

  function f (x, y, z)
  {
    "use strict";
  
    /* *x: 1, y: 2, z: 3" */
    console.log(["x: ", x, " y: ", y, " z: ", z].join(""));

    g(arguments);

    /* "x: 1, y: 2, z: 3" */
    console.log(["x: ", x, " y: ", y, " z: ", z].join(""));
  }
  
  function g (args)
  {
    args[0] = "foo"
    args[1] = "bar"
    // args[2] = args.callee
  }
  
  f(1, 2, 3);

Therefore, it was _not_ necessary to forbid arguments.callee in strict mode.

-- 
PointedEars

Twitter: @PointedEars2
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