1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/tests/non262/regress/regress-495773.js b/js/src/tests/non262/regress/regress-495773.js
new file mode 100644
index 0000000000..81f9041ec4
--- /dev/null
+++ b/js/src/tests/non262/regress/regress-495773.js
@@ -0,0 +1,39 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 495773;
+var summary = 'Read upvar from trace-entry frame from JSStackFrame instead of tracing native stack';
+var actual = ''
+var expect = '010101';
+//-----------------------------------------------------------------------------
+function f() {
+    var q = [];
+    for (var a = 0; a < 3; ++a) {
+        (function () {
+            for (var b = 0; b < 2; ++b) {
+                (function () {
+                    for (var c = 0; c < 1; ++c) {
+                        q.push(b);
+                    }
+                })();
+            }
+        })();
+    }
+    return q.join("");
+}
+
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  actual = f();
+
+  reportCompare(expect, actual, summary);
+}