diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug787921.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug787921.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+// |jit-test| error: InternalError: too much recursion
+function TestCase(n, d, e, a) {
+  this.bugnumber = typeof(BUGNUMER) != 'undefined' ? BUGNUMBER : '';
+  this.type = (typeof window == 'undefined' ? 'shell' : 'browser');
+  gTestcases[gTc++] = this;
+  if (optionName) {}
+  {} {} {} // Seems to be required to crash
+}
+function f() {}
+function g(n, h) {
+    var t = g(TestCase.toSource());
+}
+g(80, f);