rem: this.watch('x', function(){throw 'yikes'}); 
add: o.watch('x', function(){throw 'yikes'}); 
context:   this.watch('x', function(){throw 'yikes'}); 
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/9f8212823dccaacc280836a95cfba5da0cb9dbf7/regress-355344.js/buggy/js/tests/js1_5/Regress/regress-355344.js