Mon, 31 Aug 2015 14:49:47 -0700
Merge
1 /*
2 * Copyright (c) 2013, 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 */
24 /*
25 * @test
26 * @bug 4965689
27 * @summary class literal code wastes a byte
28 */
30 import java.io.PrintWriter;
31 import java.io.StringWriter;
32 import java.nio.file.Paths;
34 public class ClassLiteralWastesByteTest {
36 private static final String assertionErrorMsg =
37 "Instead of ldc_w, ldc instruction should have been generated";
39 public static void main(String[] args) {
40 new ClassLiteralWastesByteTest().run();
41 }
43 void run() {
44 check("-c", Paths.get(System.getProperty("test.classes"),
45 "test.class").toString());
46 }
48 void check(String... params) {
49 StringWriter s;
50 String out;
51 try (PrintWriter pw = new PrintWriter(s = new StringWriter())) {
52 com.sun.tools.javap.Main.run(params, pw);
53 out = s.toString();
54 }
55 if (out.contains("ldc_w")) {
56 throw new AssertionError(assertionErrorMsg);
57 }
58 }
60 }
62 class test {
63 void m() {
64 Class<?> aClass = test.class;
65 }
66 }