1 /*
 2  * Copyright (c) 2013, 2022, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 package gc.arguments;
25 
26 import jdk.test.lib.process.OutputAnalyzer;
27 import jdk.test.lib.Platform;
28 
29 /*
30  * @test
31  * @bug 8015107
32  * @summary Tests that VM prints a warning when -XX:CompressedClassSpaceSize
33  *          is used together with -XX:-UseCompressedClassPointers
34  * @library /test/lib
35  * @library /
36  * @modules java.base/jdk.internal.misc
37  *          java.management
38  * @run driver gc.arguments.TestCompressedClassFlags
39  */
40 public class TestCompressedClassFlags {
41     public static void main(String[] args) throws Exception {
42         if (Platform.is64bit()) {
43             OutputAnalyzer output = runJava("-XX:CompressedClassSpaceSize=1g",
44                                             "-XX:-UseCompressedClassPointers",
45                                             "-version");
46             output.shouldContain("warning");
47             output.shouldNotContain("error");
48             output.shouldHaveExitValue(0);
49         }
50     }
51 
52     private static OutputAnalyzer runJava(String ... args) throws Exception {
53         ProcessBuilder pb = GCArguments.createJavaProcessBuilder(args);
54         return new OutputAnalyzer(pb.start());
55     }
56 }