1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug1383591.js b/js/src/jit-test/tests/ion/bug1383591.js
new file mode 100644
index 0000000000..f80b6c9e8d
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1383591.js
@@ -0,0 +1,20 @@
+function test() {
+    var count = 0;
+    function f(x) {
+        "use strict";
+        if (x) {
+            Object.seal(this);
+        }
+        this[0] = 1;
+    }
+    for (var y of [1, 0, arguments, 1]) {
+        try {
+            var o = new f(y);
+        } catch (e) {
+            count++;
+        }
+    }
+    assertEq(count, 3);
+}
+test();
+test();