640541 - (function(){}).bind().arguments throw TypeError on NOT even strict mode

Status: RESOLVED INVALID

(Core :: JavaScript Engine, defect)

Description

[teramako]

User-Agent:       Mozilla/5.0 (Windows NT 5.1; rv:2.0b13pre) Gecko/20110303 Firefox/4.0b13pre
Build Identifier: Mozilla/5.0 (Windows NT 5.1; rv:2.0b13pre) Gecko/20110303 Firefox/4.0b13pre

See following code.
TypeError exception is thrown at referencing "arguments" in a bound Function object on NOT even strict mode

// on NOT strict mode
function a() {}
a.arguments; // null
var b = a.bind();
b.arguments;
// TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them


Reproducible: Always



Expected Results:  
on not strict mode, I think an exception should not be thrown.

Comment 1

[Tom S. (please needinfo tschuster)]

Bind is a new feature, so "bad stuff" has been disallowed from the beginning.

See EcmaScript 5th Editon 15.3.4.5 Step 21, notice the "throw" [[Get]] and [[Set]] method.
http://people.mozilla.org/~jorendorff/es5.html#sec-15.3.4.5

Comment 2

[teramako]

(In reply to comment #1)
> Bind is a new feature, so "bad stuff" has been disallowed from the beginning.
> 
> See EcmaScript 5th Editon 15.3.4.5 Step 21, notice the "throw" [[Get]] and
> [[Set]] method.
> http://people.mozilla.org/~jorendorff/es5.html#sec-15.3.4.5

Oh very good point. I get it :)
But I'm very very confused about that error message.

Comment 3

[Boris Zbarsky [:bzbarsky]]

I would expect that comes from reusing an error code for this situation...  We should consider fixing that.

Comment 4

[Tom S. (please needinfo tschuster)]

Maybe we should make this a template like error:
The '%prop%' property may not be accessed on %bound/strict function, arguments object.

Comment 5

[Brendan Eich [:brendan]]

File a bug? Easy to fix the error message to take a parameter.

/be

Comment 6

[Tom S. (please needinfo tschuster)]

Bug 640709