/* * Copyright (c) 2013, 2017, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * @test * @bug 7008643 * @summary inlined finally clauses confuse debuggers * @library /tools/lib * @enablePreview * @modules java.base/jdk.internal.classfile.impl * jdk.compiler/com.sun.tools.javac.api * jdk.compiler/com.sun.tools.javac.main * jdk.compiler/com.sun.tools.javac.util * jdk.jdeps/com.sun.tools.javap * @build toolbox.ToolBox toolbox.JavacTask * @run main InlinedFinallyConfuseDebuggersTest */ import java.io.File; import java.nio.file.Paths; import java.lang.classfile.*; import java.lang.classfile.attribute.*; import com.sun.tools.javac.util.Assert; import toolbox.JavacTask; import toolbox.ToolBox; public class InlinedFinallyConfuseDebuggersTest { static final String testSource = /* 01 */ "public class InlinedFinallyTest {\n" + /* 02 */ " void lookForThisMethod(int value) {\n" + /* 03 */ " try {\n" + /* 04 */ " if (value > 0) {\n" + /* 05 */ " System.out.println(\"if\");\n" + /* 06 */ " return;\n" + /* 07 */ " }\n" + /* 08 */ " } finally {\n" + /* 09 */ " System.out.println(\"finally\");\n" + /* 10 */ " }\n" + /* 11 */ " }\n" + /* 12 */ "}"; static final int[][] expectedLNT = { // {line-number, start-pc}, {4, 0}, //if (value > 0) { {5, 4}, // System.out.println("if"); {9, 12}, //System.out.println("finally"); {6, 20}, // return; {9, 21}, //System.out.println("finally"); {10, 29}, {9, 32}, //System.out.println("finally"); {10, 41}, //} {11, 43}, }; static final String methodToLookFor = "lookForThisMethod"; public static void main(String[] args) throws Exception { new InlinedFinallyConfuseDebuggersTest().run(); } ToolBox tb = new ToolBox(); void run() throws Exception { compileTestClass(); checkClassFile(new File(Paths.get(System.getProperty("user.dir"), "InlinedFinallyTest.class").toUri()), methodToLookFor); } void compileTestClass() throws Exception { new JavacTask(tb) .sources(testSource) .run(); } void checkClassFile(final File cfile, String methodToFind) throws Exception { ClassModel classFile = ClassFile.of().parse(cfile.toPath()); boolean methodFound = false; for (MethodModel m : classFile.methods()) { if (m.methodName().equalsString(methodToFind)) { methodFound = true; CodeAttribute code = m.findAttribute(Attributes.CODE).orElseThrow(); LineNumberTableAttribute lnt = code.findAttribute(Attributes.LINE_NUMBER_TABLE).orElseThrow(); Assert.check(lnt.lineNumbers().size() == expectedLNT.length, "The LineNumberTable found has a length different to the expected one"); int i = 0; for (LineNumberInfo entry: lnt.lineNumbers()) { Assert.check(entry.lineNumber() == expectedLNT[i][0] && entry.startPc() == expectedLNT[i][1], "LNT entry at pos " + i + " differ from expected." + "Found " + entry.lineNumber() + ":" + entry.startPc() + ". Expected " + expectedLNT[i][0] + ":" + expectedLNT[i][1]); i++; } } } Assert.check(methodFound, "The seek method was not found"); } void error(String msg) { throw new AssertionError(msg); } }