1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/bug1397026.js b/js/src/jit-test/tests/cacheir/bug1397026.js
new file mode 100644
index 0000000000..8e2dc00339
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/bug1397026.js
@@ -0,0 +1,43 @@
+function f1() {
+    var o = {};
+    var values = [];
+    for (var i = 0; i < 6; ++i) {
+        var desc = {
+            value: i,
+            writable: true,
+            configurable: true,
+            enumerable: true
+        };
+        try {
+            Object.defineProperty(o, "p", desc);
+        } catch (e) {
+        }
+        if (i === 1) {
+            Object.defineProperty(o, "p", {configurable: false});
+        }
+        values.push(o.p);
+    }
+    assertEq(values.toString(), "0,1,1,1,1,1");
+}
+f1();
+
+function f2() {
+    var o = {};
+    for (var i = 0; i < 6; ++i) {
+        var desc = {
+            value: i,
+            writable: true,
+            configurable: true,
+            enumerable: true
+        };
+        try {
+            Object.defineProperty(o, "p", desc);
+        } catch (e) {
+        }
+        assertEq(Object.getOwnPropertyDescriptor(o, "p").enumerable, true);
+        if (i > 0) {
+            Object.defineProperty(o, "p", {enumerable: false});
+        }
+    }
+}
+f2();