builtins Array.sort: exception thrown when array contains null or void 0

[dschaffe]

Array.sort throws null Reference Error when the array contains a null or void 0 item.

small code example: var A = Array(null,void 0,'a'); var E = A.sort(); print("E="+E);

es4 ri returns: [locn] builtins/Error.es:86:55-86.55 [stack] [init E() | sort() | sort(obj, undefined) | sortEngine(obj, 0, 2, [function Function]) | qsort(0, 2) | qsort(0, 1) | compare(0, 1)] **ERROR** Eval Error: uncaught exception: Reference Error: object reference on null value (near builtins/Error.es:86:55-86.55)

the same code run on tamarin outputs: a , ,

[David-Sarah Hopwood]

Affects conformance of RefImpl? to ES3.1.