41602 2010-07-05 03:44:15 -0700 Native error prototype objects should be Error instances 2011-08-12 01:12:16 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) PC All RESOLVED DUPLICATE 55346 P3 Normal --- 1 kent.hansen webkit-unassigned barraclough cmarcelo oldest_to_newest 246559 0 kent.hansen 2010-07-05 03:44:15 -0700 ECMA-262, 5th edition, 15.11.7.7: "Each NativeError prototype object is an Error object (its [[Class]] is "Error")" Object.prototype.toString.call(TypeError.prototype) produces "[object Object]" with JSC, whereas SpiderMonkey and V8 both produce "[object Error"], as expected. Same for the other *Error prototypes. 253132 1 kent.hansen 2010-07-19 03:20:39 -0700 This does not appear to be covered by any Sputnik test. 450354 2 barraclough 2011-08-12 01:12:16 -0700 *** This bug has been marked as a duplicate of bug 55346 ***