1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/primitive-proto-properties.js b/js/src/jit-test/tests/basic/primitive-proto-properties.js
new file mode 100644
index 0000000000..ea012e40e6
--- /dev/null
+++ b/js/src/jit-test/tests/basic/primitive-proto-properties.js
@@ -0,0 +1,47 @@
+function shadowing() {
+    Object.prototype.x = 1;
+
+    for (var i = 0; i < 20; i++) {
+        var x = "a".x;
+        assertEq(x, i <= 15 ? 1 : "hello");
+
+        if (i == 15) {
+            String.prototype.x = "hello";
+        }
+    }
+
+    delete Object.prototype.x;
+}
+
+function deleted() {
+    String.prototype.y = 1;
+
+    for (var i = 0; i < 20; i++) {
+        var y = "a".y;
+        assertEq(y, i <= 15 ? 1 : undefined);
+
+        if (i == 15) {
+            delete String.prototype.y;
+        }
+    }
+
+    delete String.prototype.y;
+}
+
+
+function notdefined() {
+    for (var i = 0; i < 20; i++) {
+        var z = "a".z;
+        assertEq(z, i <= 15 ? undefined : "test");
+
+        if (i == 15) {
+            String.prototype.z = "test";
+        }
+    }
+
+    delete String.prototype.z;
+}
+
+shadowing();
+deleted();
+notdefined();