rem: f = (function() { (1 for (w in []) if (1)) }); 
add: f = (function() { (1 for (w in []) if (x)) }); 
context:   f = (function() { (1 for (w in []) if (1)) });
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9421/9e8861355f7794b489d842c2fc6ac63348f4551c/regress-380237-03.js/clean/js/tests/js1_8/genexps/regress-380237-03.js