Closed
Bug 1140854
Opened 9 years ago
Closed 9 years ago
Function.prototype.toString throws when called on Proxy
Categories
(Core :: JavaScript Engine, defect)
Tracking
()
RESOLVED
INVALID
People
(Reporter: vladsv88, Unassigned)
References
Details
User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36 Steps to reproduce: This code throws a exception on Firefox 38a2: var f1 = function() { }; var f2 = new Proxy(f1, { }); f2.toString(); // throws exception Actual results: TypeError: Function.prototype.toString called on incompatible object Expected results: function() { }
Component: Untriaged → JavaScript Engine
Product: Firefox → Core
regression range: good=2015-01-31 bad=2015-02-01 http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=d7e156a7a0a6&tochange=c2359a6a6958 Tom Schuster — Bug 1100936 - Handle various operations on revoked proxies. r=efaust Not sure if it's a valid regression anyway. CC'ed Tom.
Blocks: 1100936
Flags: needinfo?(evilpies)
Comment 2•9 years ago
|
||
This was a conscious decision, the ES6 spec doesn't allow this kind of unwrapping behavior. https://people.mozilla.org/~jorendorff/es6-draft.html#sec-function.prototype.tostring: Proxies are neither a bound function nor do they have an [[ECMAScriptCode]] internal slot. They just have [[Call]].
Status: UNCONFIRMED → RESOLVED
Closed: 9 years ago
Flags: needinfo?(evilpies)
Resolution: --- → INVALID
You need to log in
before you can comment on or make changes to this bug.
Description
•