jdk8-mips64-public/langtools: test/tools/javac/linenumbers/NestedLineNumberTest.java@45746e46893b

     1 /*

     2  * Copyright (c) 2014, 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 8061778

    29  * @summary  Wrong LineNumberTable for default constructors

    30  */

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

    33 import com.sun.tools.classfile.ConstantPoolException;

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

    35 import com.sun.tools.classfile.Attribute;

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

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

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

    40 import java.io.IOException;

    42 public class NestedLineNumberTest {

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

    45         Entry[] lines = findEntries();

    46         if (lines == null || lines.length != 1) {

    47             int found = lines == null ? 0 : lines.length;

    48             error(String.format("LineNumberTable contains wrong number of entries - expected %d, found %d", 1, found));

    49         }

    51         int line = lines[0].line_number;

    52         if (line != 78) {

    53             error(String.format("LineNumberTable contains wrong line number - expected %d, found %d", 78, line));

    54         }

    55     }

    57     static Entry[] findEntries() throws IOException, ConstantPoolException {

    58         ClassFile self = ClassFile.read(NestedLineNumberTest.Test.class.getResourceAsStream("NestedLineNumberTest$Test.class"));

    59         for (Method m : self.methods) {

    60             if ("<init>".equals(m.getName(self.constant_pool))) {

    61                 Code_attribute code_attribute = (Code_attribute)m.attributes.get(Attribute.Code);

    62                 for (Attribute at : code_attribute.attributes) {

    63                     if (Attribute.LineNumberTable.equals(at.getName(self.constant_pool))) {

    64                         return ((LineNumberTable_attribute)at).line_number_table;

    65                     }

    66                 }

    67             }

    68         }

    69         return null;

    70     }

    72     static void error(String msg) {

    73         throw new AssertionError(msg);

    74     }

    76     // The default constructor in this class should get only one LineNumberTable entry,

    77     // pointing to the first line of the declaration of class Test.

    78     static class Test {

    79         static class Empty { }

    80     }

    81 }

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