65885 2011-08-08 15:56:28 -0700 Array.prototype.indexOf called on undefined should throw 2011-08-09 09:51:31 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) Unspecified Unspecified RESOLVED DUPLICATE 64679 P2 Normal --- 0 paulirish webkit-unassigned mhahnenberg oldest_to_newest 448330 0 paulirish 2011-08-08 15:56:28 -0700 [].indexOf.call(undefined, 6); ^ should throw a TypeError according to spec.... from: http://es5.github.com/#x15.4.4.14 1. Let O be the result of calling ToObject passing the `this` value as the argument. and from the ToObject definition http://es5.github.com/#x9.9 ... if ArgumentType is Undefined, then Throw a TypeError exception 448334 1 paulirish 2011-08-08 15:59:12 -0700 Current behavior: JSC returns -1. V8 throws TypeError. 448628 2 mhahnenberg 2011-08-09 09:51:31 -0700 *** This bug has been marked as a duplicate of bug 64679 ***