rem: return a ^ b; 
add: return a ^ b; 
context: function XOr( a, b ) {    return a ^ b;}
meta: 10520	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10520/0b675418ba636127763e94e614e62364d6caa659/tostring-2.js/buggy/js/tests/js1_2/function/tostring-2.js