aoqi@0: /*
aoqi@0:  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * @test
aoqi@0:  * @bug 6970173
aoqi@0:  * @summary Debug pointer at bad position
aoqi@0:  * @library /tools/javac/lib
aoqi@0:  * @build ToolBox
aoqi@0:  * @run main DebugPointerAtBadPositionTest
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.io.File;
aoqi@0: import java.nio.file.Paths;
aoqi@0: 
aoqi@0: import com.sun.tools.classfile.ClassFile;
aoqi@0: import com.sun.tools.classfile.Code_attribute;
aoqi@0: import com.sun.tools.classfile.LineNumberTable_attribute;
aoqi@0: import com.sun.tools.classfile.Method;
aoqi@0: import com.sun.tools.javac.util.Assert;
aoqi@0: 
aoqi@0: public class DebugPointerAtBadPositionTest {
aoqi@0: 
aoqi@0:     static final String testSource =
aoqi@0:             "public class AssertionTest {\n" +
aoqi@0:             "    void lookForThisMethod() {\n" +
aoqi@0:             "        int i;\n" +
aoqi@0:             "        i = 33;\n" +
aoqi@0:             "        assert // line 5\n" +
aoqi@0:             "            i < 89:\n" +
aoqi@0:             "        i < 100; // line 7\n" +
aoqi@0:             "    }\n" +
aoqi@0:             "}";
aoqi@0: 
aoqi@0:     static final int[][] expectedLNT = {
aoqi@0:         {4, 0},
aoqi@0:         {5, 3},
aoqi@0:         {8, 34}
aoqi@0:     };
aoqi@0: 
aoqi@0:     static final String methodToLookFor = "lookForThisMethod";
aoqi@0:     static final String seekMethodNotFoundMsg =
aoqi@0:         "The seek method was not found";
aoqi@0:     static final String foundLNTLengthDifferentThanExpMsg =
aoqi@0:         "The LineNumberTable found has a length different to the expected one";
aoqi@0: 
aoqi@0:     public static void main(String[] args) throws Exception {
aoqi@0:         new DebugPointerAtBadPositionTest().run();
aoqi@0:     }
aoqi@0: 
aoqi@0:     void run() throws Exception {
aoqi@0:         compileTestClass();
aoqi@0:         checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
aoqi@0:                 "AssertionTest.class").toUri()), methodToLookFor);
aoqi@0:     }
aoqi@0: 
aoqi@0:     void compileTestClass() throws Exception {
aoqi@0:         ToolBox.JavaToolArgs javacSuccessArgs =
aoqi@0:                 new ToolBox.JavaToolArgs().setSources(testSource);
aoqi@0:         ToolBox.javac(javacSuccessArgs);
aoqi@0:     }
aoqi@0: 
aoqi@0:     void checkClassFile(final File cfile, String methodToFind) throws Exception {
aoqi@0:         ClassFile classFile = ClassFile.read(cfile);
aoqi@0:         boolean methodFound = false;
aoqi@0:         for (Method method : classFile.methods) {
aoqi@0:             if (method.getName(classFile.constant_pool).equals(methodToFind)) {
aoqi@0:                 methodFound = true;
aoqi@0:                 Code_attribute code = (Code_attribute) method.attributes.get("Code");
aoqi@0:                 LineNumberTable_attribute lnt =
aoqi@0:                         (LineNumberTable_attribute) code.attributes.get("LineNumberTable");
aoqi@0:                 Assert.check(lnt.line_number_table_length == expectedLNT.length,
aoqi@0:                         foundLNTLengthDifferentThanExpMsg);
aoqi@0:                 int i = 0;
aoqi@0:                 for (LineNumberTable_attribute.Entry entry: lnt.line_number_table) {
aoqi@0:                     Assert.check(entry.line_number == expectedLNT[i][0] &&
aoqi@0:                             entry.start_pc == expectedLNT[i][1],
aoqi@0:                             "LNT entry at pos " + i + " differ from expected." +
aoqi@0:                             "Found " + entry.line_number + ":" + entry.start_pc +
aoqi@0:                             ". Expected " + expectedLNT[i][0] + ":" + expectedLNT[i][1]);
aoqi@0:                     i++;
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0:         Assert.check(methodFound, seekMethodNotFoundMsg);
aoqi@0:     }
aoqi@0: 
aoqi@0:     void error(String msg) {
aoqi@0:         throw new AssertionError(msg);
aoqi@0:     }
aoqi@0: 
aoqi@0: }