1 /*
   2  * Copyright (c) 2009, 2015, 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 import java.lang.annotation.*;
  25 import java.io.*;
  26 import java.net.URL;
  27 import java.util.List;
  28 
  29 import com.sun.tools.classfile.*;
  30 
  31 /*
  32  * @test
  33  * @bug 6843077 8006775
  34  * @summary test that typecasts annotation are emitted if only the cast
  35  *          expression is optimized away
  36  * @modules jdk.jdeps/com.sun.tools.classfile
  37  */
  38 
  39 public class TypeCasts extends ClassfileTestHelper{
  40     public static void main(String[] args) throws Exception {
  41         new TypeCasts().run();
  42     }
  43 
  44     public void run() throws Exception {
  45         expected_tinvisibles = 4;
  46         expected_tvisibles = 0;
  47 
  48         ClassFile cf = getClassFile("TypeCasts$Test.class");
  49         test(cf);
  50         for (Field f : cf.fields) {
  51             test(cf, f);
  52         }
  53         for (Method m: cf.methods) {
  54             test(cf, m, true);
  55         }
  56 
  57         countAnnotations();
  58 
  59         if (errors > 0)
  60             throw new Exception(errors + " errors found");
  61         System.out.println("PASSED");
  62     }
  63 
  64     /*********************** Test class *************************/
  65     static class Test {
  66         @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
  67         @interface A {}
  68 
  69         void emit() {
  70             Object o = null;
  71             String s = null;
  72 
  73             String a0 = (@A String)o;
  74             Object a1 = (@A Object)o;
  75 
  76             String b0 = (@A String)s;
  77             Object b1 = (@A Object)s;
  78         }
  79 
  80         void alldeadcode() {
  81             Object o = null;
  82 
  83             if (false) {
  84                 String a0 = (@A String)o;
  85             }
  86         }
  87     }
  88 }