jdk8-mips64-public/langtools: test/tools/javac/T7008643/InlinedFinallyConfuseDebuggersTest.java@45746e46893b

     1 /*

     2  * Copyright (c) 2013, 2017, 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 7008643

    27  * @summary inlined finally clauses confuse debuggers

    28  * @library /tools/javac/lib

    29  * @build ToolBox

    30  * @run main InlinedFinallyConfuseDebuggersTest

    31  */

    33 import java.io.File;

    34 import java.nio.file.Paths;

    36 import com.sun.tools.classfile.ClassFile;

    37 import com.sun.tools.classfile.Code_attribute;

    38 import com.sun.tools.classfile.LineNumberTable_attribute;

    39 import com.sun.tools.classfile.Method;

    40 import com.sun.tools.javac.util.Assert;

    42 public class InlinedFinallyConfuseDebuggersTest {

    44     static final String testSource =

    45     /* 01 */        "public class InlinedFinallyTest {\n" +

    46     /* 02 */        "    void lookForThisMethod(int value) {\n" +

    47     /* 03 */        "        try {\n" +

    48     /* 04 */        "            if (value > 0) {\n" +

    49     /* 05 */        "                System.out.println(\"if\");\n" +

    50     /* 06 */        "                return;\n" +

    51     /* 07 */        "            }\n" +

    52     /* 08 */        "        } finally {\n" +

    53     /* 09 */        "            System.out.println(\"finally\");\n" +

    54     /* 10 */        "        }\n" +

    55     /* 11 */        "    }\n" +

    56     /* 12 */        "}";

    58     static final int[][] expectedLNT = {

    59     //  {line-number, start-pc},

    60         {4,           0},       //if (value > 0) {

    61         {5,           4},       //    System.out.println("if");

    62         {9,           12},      //System.out.println("finally");

    63         {6,           20},      //    return;

    64         {9,           21},      //System.out.println("finally");

    65         {10,          29},

    66         {9,           32},      //System.out.println("finally");

    67         {10,          41},      //}

    68         {11,          43},

    69     };

    71     static final String methodToLookFor = "lookForThisMethod";

    73     public static void main(String[] args) throws Exception {

    74         new InlinedFinallyConfuseDebuggersTest().run();

    75     }

    77     void run() throws Exception {

    78         compileTestClass();

    79         checkClassFile(new File(Paths.get(System.getProperty("user.dir"),

    80                 "InlinedFinallyTest.class").toUri()), methodToLookFor);

    81     }

    83     void compileTestClass() throws Exception {

    84         ToolBox.JavaToolArgs javacSuccessArgs =

    85                 new ToolBox.JavaToolArgs().setSources(testSource);

    86         ToolBox.javac(javacSuccessArgs);

    87     }

    89     void checkClassFile(final File cfile, String methodToFind) throws Exception {

    90         ClassFile classFile = ClassFile.read(cfile);

    91         boolean methodFound = false;

    92         for (Method method : classFile.methods) {

    93             if (method.getName(classFile.constant_pool).equals(methodToFind)) {

    94                 methodFound = true;

    95                 Code_attribute code = (Code_attribute) method.attributes.get("Code");

    96                 LineNumberTable_attribute lnt =

    97                         (LineNumberTable_attribute) code.attributes.get("LineNumberTable");

    98                 Assert.check(lnt.line_number_table_length == expectedLNT.length,

    99                         "The LineNumberTable found has a length different to the expected one");

   100                 int i = 0;

   101                 for (LineNumberTable_attribute.Entry entry: lnt.line_number_table) {

   102                     Assert.check(entry.line_number == expectedLNT[i][0] &&

   103                             entry.start_pc == expectedLNT[i][1],

   104                             "LNT entry at pos " + i + " differ from expected." +

   105                             "Found " + entry.line_number + ":" + entry.start_pc +

   106                             ". Expected " + expectedLNT[i][0] + ":" + expectedLNT[i][1]);

   107                     i++;

   108                 }

   109             }

   110         }

   111         Assert.check(methodFound, "The seek method was not found");

   112     }

   114     void error(String msg) {

   115         throw new AssertionError(msg);

   116     }

   118 }

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