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test/tools/javac/T8024039/NoDeadCodeGenerationOnTrySmtTest.java@ac6ec071c2b2
test/tools/javac/T8024039/NoDeadCodeGenerationOnTrySmtTest.java
Wed, 18 Sep 2013 14:39:27 +0200
- author
- alundblad
- date
- Wed, 18 Sep 2013 14:39:27 +0200
- changeset 2034
- ac6ec071c2b2
- parent 2009
- 7c7b4aea6d50
- child 2525
- 2eb010b6cb22
- permissions
- -rw-r--r--
8024127: javac, Code_attribute.exception_table_langth should be Code_attribute.exception_table_length
Summary: exception_table_langth renamed to exception_table_length
Reviewed-by: jfranck, jjg
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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
26 /*
27 * @test
28 * @bug 8024039
29 * @summary javac, previous solution for JDK-8022186 was incorrect
30 * @library /tools/javac/lib
31 * @build ToolBox
32 * @run main NoDeadCodeGenerationOnTrySmtTest
33 */
35 import java.io.File;
36 import java.nio.file.Paths;
38 import com.sun.tools.classfile.ClassFile;
39 import com.sun.tools.classfile.Code_attribute;
40 import com.sun.tools.classfile.Code_attribute.Exception_data;
41 import com.sun.tools.classfile.Method;
42 import com.sun.tools.javac.util.Assert;
44 public class NoDeadCodeGenerationOnTrySmtTest {
46 static final String testSource =
47 "public class Test {\n" +
48 " void m1(int arg) {\n" +
49 " synchronized (new Integer(arg)) {\n" +
50 " {\n" +
51 " label0:\n" +
52 " do {\n" +
53 " break label0;\n" +
54 " } while (arg != 0);\n" +
55 " }\n" +
56 " }\n" +
57 " }\n" +
59 " void m2(int arg) {\n" +
60 " synchronized (new Integer(arg)) {\n" +
61 " {\n" +
62 " label0:\n" +
63 " {\n" +
64 " break label0;\n" +
65 " }\n" +
66 " }\n" +
67 " }\n" +
68 " }\n" +
69 "}";
71 static final int[][] expectedExceptionTable = {
72 // {from, to, target, type},
73 {11, 13, 16, 0},
74 {16, 19, 16, 0}
75 };
77 static final String[] methodsToLookFor = {"m1", "m2"};
79 public static void main(String[] args) throws Exception {
80 new NoDeadCodeGenerationOnTrySmtTest().run();
81 }
83 void run() throws Exception {
84 compileTestClass();
85 checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
86 "Test.class").toUri()), methodsToLookFor);
87 }
89 void compileTestClass() throws Exception {
90 ToolBox.JavaToolArgs javacSuccessArgs =
91 new ToolBox.JavaToolArgs().setSources(testSource);
92 ToolBox.javac(javacSuccessArgs);
93 }
95 void checkClassFile(final File cfile, String[] methodsToFind) throws Exception {
96 ClassFile classFile = ClassFile.read(cfile);
97 int numberOfmethodsFound = 0;
98 for (String methodToFind : methodsToFind) {
99 for (Method method : classFile.methods) {
100 if (method.getName(classFile.constant_pool).equals(methodToFind)) {
101 numberOfmethodsFound++;
102 Code_attribute code = (Code_attribute) method.attributes.get("Code");
103 Assert.check(code.exception_table_length == expectedExceptionTable.length,
104 "The ExceptionTable found has a length different to the expected one");
105 int i = 0;
106 for (Exception_data entry: code.exception_table) {
107 Assert.check(entry.start_pc == expectedExceptionTable[i][0] &&
108 entry.end_pc == expectedExceptionTable[i][1] &&
109 entry.handler_pc == expectedExceptionTable[i][2] &&
110 entry.catch_type == expectedExceptionTable[i][3],
111 "Exception table entry at pos " + i + " differ from expected.");
112 i++;
113 }
114 }
115 }
116 }
117 Assert.check(numberOfmethodsFound == 2, "Some seek methods were not found");
118 }
120 void error(String msg) {
121 throw new AssertionError(msg);
122 }
124 }
