1 files changed, 14 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug1222905.js b/js/src/jit-test/tests/ion/bug1222905.js
new file mode 100644
index 0000000000..3e1dc53557
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1222905.js
@@ -0,0 +1,14 @@
+for (var i = 0; i < 90; ++i) {
+    y = {x: 1};
+}
+
+Object.defineProperty(Object.prototype, "zz", {set: (v) => 1 });
+
+function f() {
+    for (var i=0; i<1500; i++) {
+        y[0] = 0;
+        if (i > 1400)
+            y.zz = 3;
+    }
+}
+f();