1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/js1_5/extensions/regress-472787.js b/js/src/tests/js1_5/extensions/regress-472787.js
new file mode 100755
index 000000000..d3196f05f
--- /dev/null
+++ b/js/src/tests/js1_5/extensions/regress-472787.js
@@ -0,0 +1,31 @@
+// |reftest| skip-if(Android)
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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 = 472787;
+var summary = 'Do not hang with gczeal, watch and concat';
+var actual = '';
+var expect = '';
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+
+this.__defineSetter__("x", Math.sin);
+this.watch("x", '' .concat);
+
+if (typeof gczeal == 'function')
+{
+  gczeal(2);
+}
+
+x = 1;
+
+if (typeof gczeal == 'function')
+{
+  gczeal(0);
+}
+
+reportCompare(expect, actual, summary);