The Tor Browser / file revision

 /* Handle flushing of scripted call ICs pointing to recompiled functions. */

 function add(x, y) {

   var z = x + y;

   return String(x + y);

 }

 function foo() {

   var x = 0x7ffffff0;

   var res = "";

   for (var i = 0; i < 20; i++) {

     res += add(x, i) + ",";

     res += add(x, i) + ",";

   }

   assertEq(res, "2147483632,2147483632,2147483633,2147483633,2147483634,2147483634,2147483635,2147483635,2147483636,2147483636,2147483637,2147483637,2147483638,2147483638,2147483639,2147483639,2147483640,2147483640,2147483641,2147483641,2147483642,2147483642,2147483643,2147483643,2147483644,2147483644,2147483645,2147483645,2147483646,2147483646,2147483647,2147483647,2147483648,2147483648,2147483649,2147483649,2147483650,2147483650,2147483651,2147483651,");

 }

 foo();