1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/tests/non262/regress/regress-420087.js b/js/src/tests/non262/regress/regress-420087.js
new file mode 100644
index 0000000000..9184059434
--- /dev/null
+++ b/js/src/tests/non262/regress/regress-420087.js
@@ -0,0 +1,28 @@
+/* -*- 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 = 420087;
+var summary = 'Do not assert:  PCVCAP_MAKE(sprop->shape, 0, 0) == entry->vcap';
+var actual = 'No Crash';
+var expect = 'No Crash';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  var dict;
+
+  for (var i = 0; i < 2; i++)
+    dict = {p: 1, q: 1, p:1};
+
+  reportCompare(expect, actual, summary);
+}