diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testBitOrAnyInconvertibleObject.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testBitOrAnyInconvertibleObject.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,28 @@
+function testBitOrAnyInconvertibleObject()
+{
+  var count = 0;
+  function toString() { ++count; if (count == 95) return {}; return count; }
+  var o = {valueOf: undefined, toString: toString};
+
+  var threw = false;
+  try
+  {
+    for (var i = 0; i < 100; i++)
+        var q = 1 | o;
+  }
+  catch (e)
+  {
+    threw = true;
+    if (i !== 94)
+      return "expected i === 94, got " + i;
+    if (q !== 95)
+      return "expected q === 95, got " + q;
+    if (count !== 95)
+      return "expected count === 95, got " + count;
+  }
+  if (!threw)
+    return "expected throw with 2 | o"; // hey, a rhyme!
+
+  return "pass";
+}
+assertEq(testBitOrAnyInconvertibleObject(), "pass");