rem: var a = new Array(1); a.x = a.unshift; a.x(1); 
add: var a = new Array(1); a.x = a.unshift; a.x(1); 
context: function x3() {	var a = new Array(1);	a.x = a.unshift;	a.x(1);}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10234/3703c3c05f398a63e55992f7687ef65273b26d6a/regress-315509-02.js/clean/js/tests/js1_5/extensions/regress-315509-02.js