diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug858617.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug858617.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,18 @@
+function TestCase(e, a) {
+  getTestCaseResult(e, a);
+};
+function reportCompare (expected, actual) {
+  new TestCase(expected, actual);
+}
+function enterFunc() {}
+function getTestCaseResult(expected, actual) {
+  return actual == expected;
+}
+reportCompare('', '');
+evaluate("\
+test();\
+function test() {\
+  enterFunc();\
+  reportCompare();\
+}\
+");