618702 - __noSuchMethod__ fails with apply, call

Status: RESOLVED INVALID

(Core :: JavaScript Engine, defect)

Description

[Rob Campbell [:rc] (:robcee)]

testcase:

Open a web console in the browser.

In the JSTerm enter:

var a = { b: "hi", __noSuchMethod__: function() { return a; } };

a.d.apply(a, []);

receive:

TypeError: a.d is undefined

This works if we just invoke a.d() by itself.

Comment 1

[Rob Campbell [:rc] (:robcee)]

should be easy to add that as a test case to:

http://mxr.mozilla.org/mozilla-central/source/js/src/tests/js1_5/extensions/no-such-method.js

or split off a separate test.

Comment 2

[Rob Campbell [:rc] (:robcee)]

build rev: http://hg.mozilla.org/mozilla-central/rev/e42d81b3e0cc

Mac OS X 10.6.5, but I expect this is cross platform.

Comment 3

[:Gavin Sharp [email: [e-mail]]]

(In reply to comment #0)
> a.d.apply(a, []);

a.d isn't being called directly here, so __noSuchMethod__ can't be invoked. To have it behave you want, we'd need a catchall getter (bug 312116) on "a" that returned a callable function. I don't think we can reasonably expect __noSuchMethod__ to work this way.