Mon, 17 Oct 2011 12:57:36 +0100
7093325: Redundant entry in bytecode exception table
Summary: Inlining of finalizers does not update gaps list accordingly
Reviewed-by: jjg
1 /*
2 * Copyright (c) 2011, 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 7068902
27 * @summary verify that string folding can be enabled or disabled
28 */
30 import com.sun.source.tree.CompilationUnitTree;
31 import com.sun.source.util.JavacTask;
32 import java.io.File;
33 import java.io.IOException;
34 import java.net.URI;
35 import java.util.ArrayList;
36 import java.util.Arrays;
37 import java.util.List;
38 import javax.tools.JavaCompiler;
39 import javax.tools.JavaFileObject;
40 import javax.tools.SimpleJavaFileObject;
41 import javax.tools.ToolProvider;
43 public class StringFoldingTest {
44 final JavaCompiler tool;
45 final JavaSource source;
47 public StringFoldingTest() {
48 tool = ToolProvider.getSystemJavaCompiler();
49 source = new JavaSource();
50 }
52 static class JavaSource extends SimpleJavaFileObject {
54 final static String source =
55 "class C {String X=\"F\" + \"O\" + \"L\" + \"D\" + \"E\" + \"D\";}";
57 JavaSource() {
58 super(URI.create("myfo:/C.java"), JavaFileObject.Kind.SOURCE);
59 }
61 @Override
62 public CharSequence getCharContent(boolean ignoreEncodingErrors) {
63 return source;
64 }
65 }
67 public static void main(String... args) throws IOException {
68 StringFoldingTest t = new StringFoldingTest();
69 t.run(false);
70 t.run(true);
71 }
73 void run(boolean disableStringFolding) throws IOException {
74 List<String> argsList = new ArrayList<String>();
75 if (disableStringFolding) {
76 argsList.add("-XDallowStringFolding=false");
77 }
78 JavacTask ct = (JavacTask)tool.getTask(null, null, null,
79 argsList,
80 null,
81 Arrays.asList(source));
82 Iterable<? extends CompilationUnitTree> trees = ct.parse();
83 String text = trees.toString();
84 System.out.println(text);
86 if (disableStringFolding) {
87 if (text.contains("FOLDED")) {
88 throw new AssertionError("Expected string folding");
89 }
90 } else {
91 if (!text.contains("FOLDED")) {
92 throw new AssertionError("Expected no string folding");
93 }
94 }
95 }
96 }