rem: this.watch('x', function(){throw 'yikes'}); 
add: o.watch('x', function(){throw 'yikes'}); 
context:   this.watch('x', function(){throw 'yikes'}); 
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/102a225dc18252cba77ec2792ec168b8b139c3f8/regress-355344.js/buggy/js/tests/js1_5/Regress/regress-355344.js