rem: return "22"; 
add: return "22"; 
context: s.toString = function() {    return "22";}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/8395/3703c3c05f398a63e55992f7687ef65273b26d6a/regress-313567.js/clean/js/tests/ecma_3/String/regress-313567.js