michael@0: function test1() {
michael@0:     var f = function() { return 1; };
michael@0: 
michael@0:     for (var i=0; i<25; i++) {
michael@0: 	f.call();
michael@0: 	if (i > 20)
michael@0: 	    f = Math.abs;
michael@0:    }
michael@0: }
michael@0: test1();
michael@0: 
michael@0: var origCall = Function.prototype.call;
michael@0: 
michael@0: function test2() {
michael@0:     var f = function() { return 1; };
michael@0:     var c = 0;
michael@0:     for (var i=0; i<25; i++) {
michael@0: 	f.call();
michael@0: 	if (i > 20)
michael@0: 	    Function.prototype.call = function() { c++; };
michael@0:     }
michael@0:     assertEq(c, 3);
michael@0: }
michael@0: test2();
michael@0: Function.prototype.call = origCall;
michael@0: 
michael@0: function test3() {
michael@0:     var f = function() { return 1; };
michael@0:     for (var i=0; i<25; i++) {
michael@0: 	f.call();
michael@0: 	if (i > 20)
michael@0: 	    Function.prototype.call = undefined;
michael@0:     }
michael@0: }
michael@0: try {
michael@0:     test3();
michael@0:     assertEq(0, 1);
michael@0: } catch(e) {}
michael@0: 
michael@0: Function.prototype.call = origCall;
michael@0: 
michael@0: function test4() {
michael@0:     var f = function(a, b, c) {
michael@0: 	assertEq(arguments.length, 1);
michael@0: 	assertEq(a, 1);
michael@0: 	assertEq(b, undefined);
michael@0: 	assertEq(c, undefined);
michael@0: 	return 1;
michael@0:     };
michael@0:     for (var i=0; i<25; i++) {
michael@0: 	f.call(null, 1);
michael@0:     }
michael@0: }
michael@0: test4();