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