Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javac/linenumbers/FinallyLineNumberTest.java
test/tools/javac/linenumbers/FinallyLineNumberTest.java
- changeset 3000
- 4044eb07194d
- child 3371
- 7220be8747f0
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| 2999:683b3e7e05a7 | 3000:4044eb07194d |
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| 1 /* | |
| 2 * Copyright (c) 2015, 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 /* | |
| 25 * @test | |
| 26 * @bug 8134759 | |
| 27 * @summary Add LineNumberTable attribute for return bytecodes split around finally code | |
| 28 * @modules jdk.jdeps/com.sun.tools.classfile | |
| 29 */ | |
| 30 | |
| 31 import com.sun.tools.classfile.ClassFile; | |
| 32 import com.sun.tools.classfile.ConstantPoolException; | |
| 33 import com.sun.tools.classfile.Method; | |
| 34 import com.sun.tools.classfile.Attribute; | |
| 35 import com.sun.tools.classfile.Code_attribute; | |
| 36 import com.sun.tools.classfile.LineNumberTable_attribute; | |
| 37 import com.sun.tools.classfile.LineNumberTable_attribute.Entry; | |
| 38 | |
| 39 import java.io.File; | |
| 40 import java.io.IOException; | |
| 41 | |
| 42 public class FinallyLineNumberTest { | |
| 43 public static void main(String[] args) throws Exception { | |
| 44 // check that we have 5 consecutive entries for method() | |
| 45 Entry[] lines = findEntries(); | |
| 46 if (lines == null) { | |
| 47 throw new Exception("finally line number table could not be loaded"); | |
| 48 } | |
| 49 if (lines.length != 4) { | |
| 50 // Help debug | |
| 51 System.err.println("LineTable error, got lines:"); | |
| 52 for (Entry e : lines) { | |
| 53 System.err.println(e.line_number); | |
| 54 } | |
| 55 throw new Exception("finally line number table incorrect: length=" + lines.length + " expected length=4"); | |
| 56 } | |
| 57 | |
| 58 // return null line, for the load null operation | |
| 59 int current = lines[0].line_number; | |
| 60 int first = current; | |
| 61 | |
| 62 // finally line | |
| 63 current = lines[1].line_number; | |
| 64 if (current != first + 2) { | |
| 65 throw new Exception("finally line number table incorrect: got=" + current + " expected=" + (first + 2)); | |
| 66 } | |
| 67 | |
| 68 // return null line, for the return operation | |
| 69 current = lines[2].line_number; | |
| 70 if (current != first) { | |
| 71 throw new Exception("finally line number table incorrect: got=" + current + " expected=" + first); | |
| 72 } | |
| 73 | |
| 74 // finally line, for when exception is thrown | |
| 75 current = lines[3].line_number; | |
| 76 if (current != first + 2) { | |
| 77 throw new Exception("finally line number table incorrect: got=" + current + " expected=" + (first + 2)); | |
| 78 } | |
| 79 } | |
| 80 | |
| 81 static Entry[] findEntries() throws IOException, ConstantPoolException { | |
| 82 ClassFile self = ClassFile.read(FinallyLineNumberTest.class.getResourceAsStream("FinallyLineNumberTest.class")); | |
| 83 for (Method m : self.methods) { | |
| 84 if ("method".equals(m.getName(self.constant_pool))) { | |
| 85 Code_attribute code_attribute = (Code_attribute)m.attributes.get(Attribute.Code); | |
| 86 for (Attribute at : code_attribute.attributes) { | |
| 87 if (Attribute.LineNumberTable.equals(at.getName(self.constant_pool))) { | |
| 88 return ((LineNumberTable_attribute)at).line_number_table; | |
| 89 } | |
| 90 } | |
| 91 } | |
| 92 } | |
| 93 return null; | |
| 94 } | |
| 95 | |
| 96 // This method should get LineNumberTable entries for: | |
| 97 // *) The load of the null | |
| 98 // *) The finally code for when an exception is *not* thrown | |
| 99 // *) The actual return, which should have the same line as the load of the null | |
| 100 // *) The finally code for when an exception *is* thrown, should have the same line as above finally code | |
| 101 public static String method(int field) { | |
| 102 try { | |
| 103 return null; | |
| 104 } finally { | |
| 105 field+=1; // Dummy | |
| 106 } | |
| 107 } | |
| 108 } |
