1 /*
   2  * Copyright (c) 2018, 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 8197439
  27  * @summary Ensure that constructors don't cause crash in Attr.postAttr
  28  * @modules jdk.compiler/com.sun.tools.javac.api
  29  *          jdk.compiler/com.sun.tools.javac.comp
  30  *          jdk.compiler/com.sun.tools.javac.tree
  31  */
  32 
  33 import java.io.*;
  34 import java.net.*;
  35 import java.util.*;
  36 
  37 import javax.tools.*;
  38 
  39 import com.sun.source.tree.CompilationUnitTree;
  40 import com.sun.tools.javac.api.JavacTaskImpl;
  41 import com.sun.tools.javac.comp.Attr;
  42 import com.sun.tools.javac.tree.JCTree;
  43 
  44 public class PostAttrConstructor {
  45 
  46     static class JavaSource extends SimpleJavaFileObject {
  47 
  48         final static String source =
  49                         "class C {\n" +
  50                         "    public C() {}\n" +
  51                         "}";
  52 
  53         JavaSource() {
  54             super(URI.create("myfo:/C.java"), JavaFileObject.Kind.SOURCE);
  55         }
  56 
  57         @Override
  58         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
  59             return source;
  60         }
  61     }
  62 
  63     public static void main(String... args) throws IOException {
  64         new PostAttrConstructor().run();
  65     }
  66 
  67     void run() throws IOException {
  68         File destDir = new File("classes"); destDir.mkdir();
  69         final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
  70         JavaSource source = new JavaSource();
  71         JavacTaskImpl ct = (JavacTaskImpl)tool.getTask(null, null, null,
  72                 Arrays.asList("-d", destDir.getPath()),
  73                 null,
  74                 Arrays.asList(source));
  75         CompilationUnitTree cut = ct.parse().iterator().next();
  76         Attr attr = Attr.instance(ct.getContext());
  77         attr.postAttr((JCTree) cut);
  78     }
  79 
  80 }