jdk8-mips64-public/langtools: test/tools/javac/T8180660/MissingLNTEntryForFinalizerTest.java@08a21473de54 (annotated)

test/tools/javac/T8180660/MissingLNTEntryForFinalizerTest.java@08a21473de54 (annotated)

test/tools/javac/T8180660/MissingLNTEntryForFinalizerTest.java

Wed, 07 Jun 2017 00:04:12 -0700

author: shshahma
date: Wed, 07 Jun 2017 00:04:12 -0700
changeset 3497: 08a21473de54
parent 3371: 7220be8747f0
permissions: -rw-r--r--

8180660: missing LNT entry for finally block
Reviewed-by: mcimadamore, vromero
Contributed-by: maurizio.cimadamore@oracle.com, vicente.romero@oracle.com

 /*
  * Copyright (c) 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 8180141
  * @summary Missing entry in LineNumberTable for break statement that jumps out of try-finally
  * @compile -g MissingLNTEntryForFinalizerTest.java
  * @run main MissingLNTEntryForFinalizerTest
  */
 import java.io.File;
 import java.net.URI;
 import javax.tools.JavaFileObject;
 import javax.tools.SimpleJavaFileObject;
 import com.sun.tools.classfile.*;
 import com.sun.tools.javac.comp.Attr;
 import com.sun.tools.javac.comp.AttrContext;
 import com.sun.tools.javac.comp.Env;
 import com.sun.tools.javac.file.JavacFileManager;
 import com.sun.tools.javac.main.JavaCompiler;
 import com.sun.tools.javac.tree.JCTree;
 import com.sun.tools.javac.tree.JCTree.*;
 import com.sun.tools.javac.util.Context;
 import com.sun.tools.javac.util.List;
 import static com.sun.tools.javac.util.List.of;
 import static com.sun.tools.javac.tree.JCTree.Tag.*;
 public class MissingLNTEntryForFinalizerTest {
     protected ReusableJavaCompiler tool;
     Context context;
     MissingLNTEntryForFinalizerTest() {
         context = new Context();
         JavacFileManager.preRegister(context);
         MyAttr.preRegister(context);
         tool = new ReusableJavaCompiler(context);
     }
     public static void main(String... args) throws Throwable {
         new MissingLNTEntryForFinalizerTest().test();
     }
     void test() throws Throwable {
         JavaSource source = new JavaSource("1");
         tool.clear();
         List<JavaFileObject> inputs = of(source);
         try {
             tool.compile(inputs);
         } catch (Throwable ex) {
             throw new AssertionError(ex);
         }
         File testClasses = new File(".");
         File file = new File(testClasses, "Test1.class");
         ClassFile classFile = ClassFile.read(file);
         for (Method m : classFile.methods) {
             if (classFile.constant_pool.getUTF8Value(m.name_index).equals("foo")) {
                 Code_attribute code = (Code_attribute)m.attributes.get(Attribute.Code);
                 LineNumberTable_attribute lnt = (LineNumberTable_attribute)code.attributes.get(Attribute.LineNumberTable);
                 checkLNT(lnt, MyAttr.lineNumber);
             }
         }
     }
     void checkLNT(LineNumberTable_attribute lnt, int lineToCheckFor) {
         for (LineNumberTable_attribute.Entry e: lnt.line_number_table) {
             if (e.line_number == lineToCheckFor) {
                 return;
             }
         }
         throw new AssertionError("seek line number not found in the LNT for method foo()");
     }
     class JavaSource extends SimpleJavaFileObject {
         String id;
         String template =
                 "import java.util.*;\n" +
                 "class Test#Id {\n" +
                 "    void foo() {\n" +
                 "        List<String> l = null;\n" +
                 "        String first = null;\n" +
                 "        try {\n" +
                 "            first = l.get(0);\n" +
                 "        } finally {\n" +
                 "            if (first != null) {\n" +
                 "                System.out.println(\"finalizer\");\n" +
                 "            }\n" +
                 "        }\n" +
                 "    }\n" +
                 "}";
         JavaSource(String id) {
             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
             this.id = id;
         }
         @Override
         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
             return template.replace("#Id", id);
         }
     }
     /* this class has been set up to do not depend on a fixed line number, this Attr subclass will
      * look for 'break' or 'continue' statements in order to find the actual line number they occupy.
      * This way the test can find if that line number appears in the LNT generated for a given class.
      */
     static class MyAttr extends Attr {
         static int lineNumber;
         static void preRegister(Context context) {
             context.put(attrKey, (com.sun.tools.javac.util.Context.Factory<Attr>) c -> new MyAttr(c));
         }
         MyAttr(Context context) {
             super(context);
         }
         @Override
         public com.sun.tools.javac.code.Type attribStat(JCTree tree, Env<AttrContext> env) {
             com.sun.tools.javac.code.Type result = super.attribStat(tree, env);
             if (tree.hasTag(TRY)) {
                 JCTry tryTree = (JCTry)tree;
                 lineNumber = env.toplevel.lineMap.getLineNumber(tryTree.finalizer.endpos);
             }
             return result;
         }
     }
     static class ReusableJavaCompiler extends JavaCompiler {
         ReusableJavaCompiler(Context context) {
             super(context);
         }
         protected void checkReusable() {
             // do nothing
         }
         @Override
         public void close() {
             //do nothing
         }
         void clear() {
             //do nothing
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/T8180660/MissingLNTEntryForFinalizerTest.java@08a21473de54 (annotated)

test/tools/javac/T8180660/MissingLNTEntryForFinalizerTest.java