Add m-esr52 at 52.6.0

1 files changed, 17 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/basic/testDeepPropertyShadowing.js b/js/src/jit-test/tests/basic/testDeepPropertyShadowing.js
new file mode 100644
index 000000000..65dbf8d5e
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testDeepPropertyShadowing.js
@@ -0,0 +1,17 @@
+function testDeepPropertyShadowing()
+{
+    function h(node) {
+        var x = 0;
+        while (node) {
+            x++;
+            node = node.parent;
+        }
+        return x;
+    }
+    var tree = {__proto__: {__proto__: {parent: null}}};
+    h(tree);
+    h(tree);
+    tree.parent = {};
+    assertEq(h(tree), 2);
+}
+testDeepPropertyShadowing();