a test for stringify "whitelist" which WebKit fails

Allen Wirfs-Brock Allen.Wirfs-Brock at microsoft.com
Thu Aug 27 07:47:10 PDT 2009

This is a fairly recent (last couple months, I believe) change to the spec.  The whitelist used  to require strings. It now may contain strings, numbers, string objects, or number objects.  They all get converted to string values.  See stringify steps 4.b.ii.2-4.


>-----Original Message-----
>From: es-discuss-bounces at mozilla.org [mailto:es-discuss-
>bounces at mozilla.org] On Behalf Of Hallvord R. M. Steen
>Sent: Thursday, August 27, 2009 4:44 AM
>To: Oliver Hunt
>Cc: es-discuss at mozilla.org
>Subject: a test for stringify "whitelist" which WebKit fails
>Hi Oliver,
>I'm curious about this TC - it appears to be WebKit against the rest of
>us, but it will take me some assistance from somebody with Superior
>Spec-Reading Skills to figure out who does the right thing..
>(test code is at
>http://testsuites.opera.com/JSON/correctness/scripts/046.js )
>Issue: if an object has properties whose name is a number inside a
>({'1':'foo'}) and you pass in a white-list array to stringify(), WebKit
>requires the elements in the array to be numbers inside strings too,
>other implementations allow either plain numbers or numbers inside
>The latter makes more sense to me given that JS generally doesn't
>distinguish obj[1] and obj['1']. Do you think this is a WebKit bug?
>Hallvord R. M. Steen, Core Tester, Opera Software
>http://www.opera.com http://my.opera.com/hallvors/
>es-discuss mailing list
>es-discuss at mozilla.org

More information about the es-discuss mailing list