--- /dev/null	2013-02-02 12:34:49.000000000 +0100
+++ new/test/runtime/CommandLine/NonBooleanFlagWithInvalidBooleanPrefix.java	2013-02-02 12:34:49.050526000 +0100
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8006298
+ * @summary Using a bool (+/-) prefix on non-bool flag should result in a useful error message
+ * @library /testlibrary
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class NonBooleanFlagWithInvalidBooleanPrefix {
+  public static void main(String[] args) throws Exception {
+    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+        "-XX:-ObjectAlignmentInBytes=16", "-version");
+
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+    output.shouldContain("Unexpected +/- setting in VM option 'ObjectAlignmentInBytes=16'");
+    output.shouldHaveExitValue(1);
+
+    pb = ProcessTools.createJavaProcessBuilder(
+        "-XX:+ObjectAlignmentInBytes=16", "-version");
+
+    output = new OutputAnalyzer(pb.start());
+    output.shouldContain("Unexpected +/- setting in VM option 'ObjectAlignmentInBytes=16'");
+    output.shouldHaveExitValue(1);
+
+  }
+}