diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug799185-6.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug799185-6.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+function f(a, b, c) {
+    while (a) {
+        let x;
+        if (b) {
+            if (c) {
+                d();
+                break;  // hidden LEAVEBLOCK, then GOTO
+            }
+            break; // another hidden LEAVEBLOCK, then GOTO
+        }
+    }
+    null.x;
+}
+
+try {
+    f();
+} catch (x) {
+    ;
+}