michael@0: this.__proto__ = null;
michael@0: 
michael@0: function testLenientAndStrict(code, lenient_pred, strict_pred) {
michael@0:   return (strict_pred("'use strict'; " + code) && 
michael@0:           lenient_pred(code));
michael@0: }
michael@0: function raisesException(exception) {
michael@0:   return function (code) {
michael@0:     try {
michael@0:       eval(code);
michael@0:     } catch (actual) {
michael@0:     }
michael@0:   };
michael@0: };
michael@0: try {
michael@0: function arr() {
michael@0:   return Object.defineProperty(Object()* delete Object, 0, {writable: false});
michael@0: }
michael@0: assertEq(testLenientAndStrict('var a = arr(); [a.splice(0, 1), a]',
michael@0:                               raisesException(TypeError),
michael@0:                               raisesException(TypeError)),
michael@0:          true);
michael@0: } catch (e) {}
michael@0: ForIn_2(this);
michael@0: function ForIn_2(object) {
michael@0:   for ( property in object ) {
michael@0:     with ( object ) {
michael@0:     }
michael@0:   }
michael@0: }