michael@0: function f(useArg2, arg2, expect) {
michael@0:     var args = arguments;
michael@0:     if (useArg2)
michael@0: 	args = arg2;
michael@0: 
michael@0:     print(args)
michael@0:     assertEq(args.length, expect);
michael@0: }
michael@0: 
michael@0: // Generate a PIC for arguments.
michael@0: f(false, 0, 3);
michael@0: f(false, 0, 3);
michael@0: f(false, 0, 3);
michael@0: 
michael@0: // Now call it with a slow array.
michael@0: var a = [1, 2, 3];
michael@0: a.x = 9;
michael@0: 
michael@0: f(true, a, 3);