1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/tests/non262/regress/regress-404755.js b/js/src/tests/non262/regress/regress-404755.js
new file mode 100644
index 0000000000..464952ec4c
--- /dev/null
+++ b/js/src/tests/non262/regress/regress-404755.js
@@ -0,0 +1,47 @@
+// |reftest| random -- unreliable - based on GC timing
+/* -*- 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 = 404755;
+var summary = 'Do not consume heap when deleting property';
+var actual = 'No leak';
+var expect = 'No leak';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+ 
+  var n = 1 << 22;
+  var o = {};
+  do {
+    o[0] = 0;
+    delete o[0]; 
+  } while (--n != 0);
+
+  gc();
+  var time = Date.now();
+  gc();
+  time = Date.now() - time;
+
+  o = {};
+  o[0] = 0;
+  delete o[0]; 
+  gc();
+  var time2 = Date.now();
+  gc();
+  time2 = Date.now() - time2;
+  print(time+" "+time2);
+  if (time > 2 && time > time2 * 5)
+    throw "A possible leak is observed";
+
+  reportCompare(expect, actual, summary);
+}