1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/js1_5/GC/regress-418128.js b/js/src/tests/js1_5/GC/regress-418128.js
new file mode 100644
index 000000000..0642e83dc
--- /dev/null
+++ b/js/src/tests/js1_5/GC/regress-418128.js
@@ -0,0 +1,40 @@
+/* -*- 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 = 418128;
+var summary = 'GC hazard with ++/--';
+var actual = 'No Crash';
+var expect = 'No Crash';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+ 
+  var obj = {};
+  var id = { toString: function() { return ""+Math.pow(2, 0.1); } }
+  obj[id] = { valueOf: unrooter };
+  print(obj[id]++);
+  gc();
+  print(uneval(obj));
+
+  function unrooter()
+  {
+    delete obj[id];
+    gc();
+    return 10;
+  }
+
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}