1/* 2 * Copyright (c) 2013, 2016, 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 6970173 27 * @summary Debug pointer at bad position 28 * @library /tools/lib 29 * @modules jdk.jdeps/com.sun.tools.classfile 30 * jdk.compiler/com.sun.tools.javac.api 31 * jdk.compiler/com.sun.tools.javac.main 32 * jdk.compiler/com.sun.tools.javac.util 33 * jdk.jdeps/com.sun.tools.javap 34 * @build toolbox.ToolBox toolbox.JavacTask 35 * @run main DebugPointerAtBadPositionTest 36 */ 37 38import java.io.File; 39import java.nio.file.Paths; 40 41import com.sun.tools.classfile.ClassFile; 42import com.sun.tools.classfile.Code_attribute; 43import com.sun.tools.classfile.LineNumberTable_attribute; 44import com.sun.tools.classfile.Method; 45import com.sun.tools.javac.util.Assert; 46 47import toolbox.JavacTask; 48import toolbox.ToolBox; 49 50public class DebugPointerAtBadPositionTest { 51 52 static final String testSource = 53 "public class AssertionTest {\n" + 54 " void lookForThisMethod() {\n" + 55 " int i;\n" + 56 " i = 33;\n" + 57 " assert // line 5\n" + 58 " i < 89:\n" + 59 " i < 100; // line 7\n" + 60 " }\n" + 61 "}"; 62 63 static final int[][] expectedLNT = { 64 {4, 0}, 65 {5, 3}, 66 {8, 34} 67 }; 68 69 static final String methodToLookFor = "lookForThisMethod"; 70 static final String seekMethodNotFoundMsg = 71 "The seek method was not found"; 72 static final String foundLNTLengthDifferentThanExpMsg = 73 "The LineNumberTable found has a length different to the expected one"; 74 75 public static void main(String[] args) throws Exception { 76 new DebugPointerAtBadPositionTest().run(); 77 } 78 79 void run() throws Exception { 80 compileTestClass(); 81 checkClassFile(new File(Paths.get(System.getProperty("user.dir"), 82 "AssertionTest.class").toUri()), methodToLookFor); 83 } 84 85 void compileTestClass() throws Exception { 86 ToolBox tb = new ToolBox(); 87 new JavacTask(tb) 88 .sources(testSource) 89 .run(); 90 } 91 92 void checkClassFile(final File cfile, String methodToFind) throws Exception { 93 ClassFile classFile = ClassFile.read(cfile); 94 boolean methodFound = false; 95 for (Method method : classFile.methods) { 96 if (method.getName(classFile.constant_pool).equals(methodToFind)) { 97 methodFound = true; 98 Code_attribute code = (Code_attribute) method.attributes.get("Code"); 99 LineNumberTable_attribute lnt = 100 (LineNumberTable_attribute) code.attributes.get("LineNumberTable"); 101 Assert.check(lnt.line_number_table_length == expectedLNT.length, 102 foundLNTLengthDifferentThanExpMsg); 103 int i = 0; 104 for (LineNumberTable_attribute.Entry entry: lnt.line_number_table) { 105 Assert.check(entry.line_number == expectedLNT[i][0] && 106 entry.start_pc == expectedLNT[i][1], 107 "LNT entry at pos " + i + " differ from expected." + 108 "Found " + entry.line_number + ":" + entry.start_pc + 109 ". Expected " + expectedLNT[i][0] + ":" + expectedLNT[i][1]); 110 i++; 111 } 112 } 113 } 114 Assert.check(methodFound, seekMethodNotFoundMsg); 115 } 116 117 void error(String msg) { 118 throw new AssertionError(msg); 119 } 120 121} 122