1110886 - Strict mode Function.caller accessor undefined

Status: RESOLVED INVALID

(Core :: JavaScript Engine, defect)

Description

[James Keane]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:34.0) Gecko/20100101 Firefox/34.0
Build ID: 20141127111021

Steps to reproduce:

var fn = function() { "use strict"; };
var throwTypeError = Object.getOwnPropertyDescriptor(fn, 'caller').get;


Actual results:

Object.getOwnPropertyDescriptor(fn, 'caller') is null.


Expected results:

As per https://bugzilla.mozilla.org/show_bug.cgi?id=514581 and "js/src/tests/test262/ch13/13.2/S13.2.3_A1.js" _and_ http://people.mozilla.org/~jorendorff/es6-draft.html#sec-%throwtypeerror%

Function.caller should be [[ThrowTypeError]]

Comment 1

[Mark S. Miller]

I think this is intended to be compat with expected ES6.

Comment 2

[James Keane]

"The spec doesn't really anticipate this approach, but what you're implementing here seems clearly better than the spec --- Web compat permitting."

https://bugzilla.mozilla.org/show_bug.cgi?id=969478

Comment 3

[Mark S. Miller]

See https://bugs.ecmascript.org/show_bug.cgi?id=3113

Comment 5

[Claude Pache]

Per Bug 1615704, this is Working as intended. The relevant accessor is inherited from Function.prototype.