diff -r 000000000000 -r 6474c204b198 storage/test/unit/test_bug-393952.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/storage/test/unit/test_bug-393952.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,38 @@
+/* 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/. */
+
+// Testcase for bug 393952:  crash when I try to VACUUM and one of the tables
+// has a UNIQUE text column.   StorageUnicodeFunctions::likeFunction() 
+// needs to handle null aArgv[0] and aArgv[1]
+
+function setup()
+{
+  getOpenedDatabase().createTable("t1", "x TEXT UNIQUE");
+
+  var stmt = createStatement("INSERT INTO t1 (x) VALUES ('a')");
+  stmt.execute();
+  stmt.reset();
+  stmt.finalize();
+}
+
+function test_vacuum()
+{
+  var stmt = createStatement("VACUUM;");
+  stmt.executeStep();
+  stmt.reset();
+  stmt.finalize();
+}
+
+var tests = [test_vacuum];
+
+function run_test()
+{
+  setup();
+
+  for (var i = 0; i < tests.length; i++)
+    tests[i]();
+    
+  cleanup();
+}
+