Mercurial > jdk8-mips64-public > langtools / annotate
test/tools/javac/linenumbers/FinallyLineNumberTest.java@7220be8747f0 (annotated)
test/tools/javac/linenumbers/FinallyLineNumberTest.java
Wed, 07 Jun 2017 00:04:12 -0700
- author
- shshahma
- date
- Wed, 07 Jun 2017 00:04:12 -0700
- changeset 3371
- 7220be8747f0
- parent 3000
- 4044eb07194d
- permissions
- -rw-r--r--
8180660: missing LNT entry for finally block
Reviewed-by: mcimadamore, vromero
Contributed-by: maurizio.cimadamore@oracle.com, vicente.romero@oracle.com
| aeriksso@3000 | 1 | /* |
| shshahma@3371 | 2 | * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved. |
| aeriksso@3000 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aeriksso@3000 | 4 | * |
| aeriksso@3000 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aeriksso@3000 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aeriksso@3000 | 7 | * published by the Free Software Foundation. |
| aeriksso@3000 | 8 | * |
| aeriksso@3000 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aeriksso@3000 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aeriksso@3000 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aeriksso@3000 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aeriksso@3000 | 13 | * accompanied this code). |
| aeriksso@3000 | 14 | * |
| aeriksso@3000 | 15 | * You should have received a copy of the GNU General Public License version |
| aeriksso@3000 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aeriksso@3000 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aeriksso@3000 | 18 | * |
| aeriksso@3000 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aeriksso@3000 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aeriksso@3000 | 21 | * questions. |
| aeriksso@3000 | 22 | */ |
| aeriksso@3000 | 23 | |
| aeriksso@3000 | 24 | /* |
| aeriksso@3000 | 25 | * @test |
| aeriksso@3000 | 26 | * @bug 8134759 |
| aeriksso@3000 | 27 | * @summary Add LineNumberTable attribute for return bytecodes split around finally code |
| aeriksso@3000 | 28 | * @modules jdk.jdeps/com.sun.tools.classfile |
| aeriksso@3000 | 29 | */ |
| aeriksso@3000 | 30 | |
| aeriksso@3000 | 31 | import com.sun.tools.classfile.ClassFile; |
| aeriksso@3000 | 32 | import com.sun.tools.classfile.ConstantPoolException; |
| aeriksso@3000 | 33 | import com.sun.tools.classfile.Method; |
| aeriksso@3000 | 34 | import com.sun.tools.classfile.Attribute; |
| aeriksso@3000 | 35 | import com.sun.tools.classfile.Code_attribute; |
| aeriksso@3000 | 36 | import com.sun.tools.classfile.LineNumberTable_attribute; |
| aeriksso@3000 | 37 | import com.sun.tools.classfile.LineNumberTable_attribute.Entry; |
| aeriksso@3000 | 38 | |
| aeriksso@3000 | 39 | import java.io.IOException; |
| aeriksso@3000 | 40 | |
| aeriksso@3000 | 41 | public class FinallyLineNumberTest { |
| aeriksso@3000 | 42 | public static void main(String[] args) throws Exception { |
| aeriksso@3000 | 43 | // check that we have 5 consecutive entries for method() |
| aeriksso@3000 | 44 | Entry[] lines = findEntries(); |
| aeriksso@3000 | 45 | if (lines == null) { |
| aeriksso@3000 | 46 | throw new Exception("finally line number table could not be loaded"); |
| aeriksso@3000 | 47 | } |
| shshahma@3371 | 48 | if (lines.length != 5) { |
| aeriksso@3000 | 49 | // Help debug |
| aeriksso@3000 | 50 | System.err.println("LineTable error, got lines:"); |
| aeriksso@3000 | 51 | for (Entry e : lines) { |
| aeriksso@3000 | 52 | System.err.println(e.line_number); |
| aeriksso@3000 | 53 | } |
| shshahma@3371 | 54 | throw new Exception("finally line number table incorrect: length=" + lines.length + " expected length=5"); |
| aeriksso@3000 | 55 | } |
| aeriksso@3000 | 56 | |
| aeriksso@3000 | 57 | // return null line, for the load null operation |
| aeriksso@3000 | 58 | int current = lines[0].line_number; |
| aeriksso@3000 | 59 | int first = current; |
| aeriksso@3000 | 60 | |
| aeriksso@3000 | 61 | // finally line |
| aeriksso@3000 | 62 | current = lines[1].line_number; |
| aeriksso@3000 | 63 | if (current != first + 2) { |
| aeriksso@3000 | 64 | throw new Exception("finally line number table incorrect: got=" + current + " expected=" + (first + 2)); |
| aeriksso@3000 | 65 | } |
| aeriksso@3000 | 66 | |
| aeriksso@3000 | 67 | // return null line, for the return operation |
| aeriksso@3000 | 68 | current = lines[2].line_number; |
| aeriksso@3000 | 69 | if (current != first) { |
| aeriksso@3000 | 70 | throw new Exception("finally line number table incorrect: got=" + current + " expected=" + first); |
| aeriksso@3000 | 71 | } |
| aeriksso@3000 | 72 | |
| shshahma@3371 | 73 | // for when exception is thrown |
| aeriksso@3000 | 74 | current = lines[3].line_number; |
| aeriksso@3000 | 75 | if (current != first + 2) { |
| aeriksso@3000 | 76 | throw new Exception("finally line number table incorrect: got=" + current + " expected=" + (first + 2)); |
| aeriksso@3000 | 77 | } |
| shshahma@3371 | 78 | |
| shshahma@3371 | 79 | // the '}' closing the finally block |
| shshahma@3371 | 80 | current = lines[4].line_number; |
| shshahma@3371 | 81 | if (current != first + 3) { |
| shshahma@3371 | 82 | throw new Exception("finally line number table incorrect: got=" + current + " expected=" + (first + 3)); |
| shshahma@3371 | 83 | } |
| aeriksso@3000 | 84 | } |
| aeriksso@3000 | 85 | |
| aeriksso@3000 | 86 | static Entry[] findEntries() throws IOException, ConstantPoolException { |
| aeriksso@3000 | 87 | ClassFile self = ClassFile.read(FinallyLineNumberTest.class.getResourceAsStream("FinallyLineNumberTest.class")); |
| aeriksso@3000 | 88 | for (Method m : self.methods) { |
| aeriksso@3000 | 89 | if ("method".equals(m.getName(self.constant_pool))) { |
| aeriksso@3000 | 90 | Code_attribute code_attribute = (Code_attribute)m.attributes.get(Attribute.Code); |
| aeriksso@3000 | 91 | for (Attribute at : code_attribute.attributes) { |
| aeriksso@3000 | 92 | if (Attribute.LineNumberTable.equals(at.getName(self.constant_pool))) { |
| aeriksso@3000 | 93 | return ((LineNumberTable_attribute)at).line_number_table; |
| aeriksso@3000 | 94 | } |
| aeriksso@3000 | 95 | } |
| aeriksso@3000 | 96 | } |
| aeriksso@3000 | 97 | } |
| aeriksso@3000 | 98 | return null; |
| aeriksso@3000 | 99 | } |
| aeriksso@3000 | 100 | |
| aeriksso@3000 | 101 | // This method should get LineNumberTable entries for: |
| aeriksso@3000 | 102 | // *) The load of the null |
| aeriksso@3000 | 103 | // *) The finally code for when an exception is *not* thrown |
| aeriksso@3000 | 104 | // *) The actual return, which should have the same line as the load of the null |
| aeriksso@3000 | 105 | // *) The finally code for when an exception *is* thrown, should have the same line as above finally code |
| aeriksso@3000 | 106 | public static String method(int field) { |
| aeriksso@3000 | 107 | try { |
| aeriksso@3000 | 108 | return null; |
| aeriksso@3000 | 109 | } finally { |
| aeriksso@3000 | 110 | field+=1; // Dummy |
| aeriksso@3000 | 111 | } |
| aeriksso@3000 | 112 | } |
| aeriksso@3000 | 113 | } |
