1 /*
   2  * Copyright (c) 2009 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  */
  37 
  38 public class TypeCasts extends ClassfileTestHelper{
  39     public static void main(String[] args) throws Exception {
  40         new TypeCasts().run();
  41     }
  42 
  43     public void run() throws Exception {
  44         expected_tinvisibles = 4;
  45         expected_tvisibles = 0;
  46 
  47         ClassFile cf = getClassFile("TypeCasts$Test.class");
  48         test(cf);
  49         for (Field f : cf.fields) {
  50             test(cf, f);
  51         }
  52         for (Method m: cf.methods) {
  53             test(cf, m);
  54         }
  55 
  56         countAnnotations();
  57 
  58         if (errors > 0)
  59             throw new Exception(errors + " errors found");
  60         System.out.println("PASSED");
  61     }
  62 
  63     /*********************** Test class *************************/
  64     static class Test {
  65         @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
  66         @interface A {}
  67 
  68         void emit() {
  69             Object o = null;
  70             String s = null;
  71 
  72             String a0 = (@A String)o;
  73             Object a1 = (@A Object)o;
  74 
  75             String b0 = (@A String)s;
  76             Object b1 = (@A Object)s;
  77         }
  78 
  79         void alldeadcode() {
  80             Object o = null;
  81 
  82             if (false) {
  83                 String a0 = (@A String)o;
  84             }
  85         }
  86     }
  87 }