diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testBitOrInconvertibleObjectInconvertibleObject.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testBitOrInconvertibleObjectInconvertibleObject.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+function testBitOrInconvertibleObjectInconvertibleObject()
+{
+  var count1 = 0;
+  function toString1() { ++count1; if (count1 == 95) return {}; return count1; }
+  var o1 = {valueOf: undefined, toString: toString1};
+  var count2 = 0;
+  function toString2() { ++count2; if (count2 == 95) return {}; return count2; }
+  var o2 = {valueOf: undefined, toString: toString2};
+
+  var threw = false;
+  try
+  {
+    for (var i = 0; i < 100; i++)
+        var q = o1 | o2;
+  }
+  catch (e)
+  {
+    threw = true;
+    if (i !== 94)
+      return "expected i === 94, got " + i;
+    if (q !== 94)
+      return "expected q === 94, got " + q;
+    if (count1 !== 95)
+      return "expected count1 === 95, got " + count1;
+    if (count2 !== 94)
+      return "expected count2 === 94, got " + count2;
+  }
+  if (!threw)
+    return "expected throw with o1 | o2";
+
+  return "pass";
+}
+assertEq(testBitOrInconvertibleObjectInconvertibleObject(), "pass");