1 files changed, 35 insertions, 0 deletions
diff --git a/js/src/tests/non262/extensions/regress-480579.js b/js/src/tests/non262/extensions/regress-480579.js
new file mode 100644
index 0000000000..f28fe3a1fa
--- /dev/null
+++ b/js/src/tests/non262/extensions/regress-480579.js
@@ -0,0 +1,35 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ * Contributor: Jason Orendorff
+ */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 480579;
+var summary = 'Do not assert: pobj_ == obj2';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  expect = '12';
+
+  a = {x: 1};
+  b = {__proto__: a};
+  c = {__proto__: b};
+  for (i = 0; i < 2; i++) {
+    print(actual += c.x);
+    b.x = 2;
+  }
+
+  reportCompare(expect, actual, summary);
+}