diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug867820.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug867820.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,18 @@
+
+function AddTestCase(expect, actual) {
+  new TestCase(expect, actual);
+}
+function TestCase(e, a) {
+  this.expect = e;
+  getTestCaseResult(e, a);
+}
+function getTestCaseResult(expected, actual) {
+  if (actual != expected) {}
+}
+AddRegExpCases(false, Math.pow(2,31));
+AddRegExpCases("", Math.pow(2,30) - 1);
+function AddRegExpCases(m, l) {
+  AddTestCase("");
+  AddTestCase(m, true);
+  AddTestCase(l, 0);
+}