diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug757431.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug757431.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,18 @@
+
+function setterFunction(v) { called = true; }
+function getterFunction(v) { return "getter"; }
+Object.defineProperty(Array.prototype, 1,{ 
+  get: getterFunction, 
+  set: setterFunction 
+});
+gczeal(4);
+var N = 350;
+var source = "".concat(
+  repeat_str("try { f(); } finally {\n", N),
+  repeat_str("}", N));
+function repeat_str(str, repeat_count) {
+  var arr = new Array(--repeat_count);
+  while (repeat_count != 0)
+    arr[--repeat_count] = str;
+  return str.concat.apply(str, arr);
+}