1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/for-in-iterator-1.js b/js/src/jit-test/tests/ion/for-in-iterator-1.js
new file mode 100644
index 0000000000..0257634459
--- /dev/null
+++ b/js/src/jit-test/tests/ion/for-in-iterator-1.js
@@ -0,0 +1,29 @@
+gczeal(0);
+
+var values = {
+    input1: null,
+    input2: undefined,
+    input3: {},
+    input4: [],
+    input5: ""
+};
+
+var original = function (x) {
+    var res = { start: inIon(), end: false };
+    for (var i in x.input) {
+        throw "Iterator is not empty";
+    }
+    res.end = inIon();
+    return res;
+};
+
+for (var i = 1; i < 6; i++) {
+    // Reset type inference.
+    var res = false;
+    var test = eval(`(${original})`.replace(".input", ".input" + i));
+
+    // Run until the end is running within Ion, or skip if we are unable to run
+    // in Ion.
+    while (!res.start || !res.end)
+        res = test(values);
+}