diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testBug761863.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testBug761863.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+gczeal(4);
+function blah() {
+  var i = 1;
+  function o() {}
+  function k() { i++; }
+  o.x = 0;
+  for (var j = 0; j < 100; ++j) {
+      i = {a: o, b: k};
+      i++;
+  }
+}
+blah();