rem: let b = function(){}.__parent__; print(b[1] = throwError); })(); 
add: let b = function(){}.__parent__; print(b[1] = throwError); })(); 
context:   (function() {    let b = function(){}.__parent__;    print(b[1] = throwError);  })();
meta: 10520	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10520/0b675418ba636127763e94e614e62364d6caa659/regress-355583.js/clean/js/tests/js1_7/extensions/regress-355583.js