diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/jaeger/recompile/bug621292.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/jaeger/recompile/bug621292.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,24 @@
+
+/* Don't crash. */
+
+var count = 0;
+
+function callbackfn(v) {
+  if (++count == 98)
+    count = 0x7ffffff0;
+  return arr[0] + count;
+}
+
+function foo() {
+  arr = [1,2,3,4,5];
+  for (var i = 0; i < 50; i++)
+    arr = arr.map(callbackfn);
+}
+foo();
+
+function f(a,b,c) {
+    a = 1; b = 'str'; c = 2.1;
+    return arguments[0];
+}
+for (var i = 0; i < 20; i++)
+  assertEq(f(10,'sss',1), 1);