1 /*
   2  * Copyright (c) 2017, 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 8176147
  27  * @summary Throw ClassFormatError exception for multiple Signature attributes
  28  * @compile DupSignatureAttrs.jcod
  29  * @run main TestDupSignatureAttr
  30  */
  31 
  32 public class TestDupSignatureAttr {
  33     public static void main(String args[]) throws Throwable {
  34 
  35         System.out.println("Regression test for bug 8176147");
  36 
  37         // Duplicate Class Signature attributes.
  38         try {
  39             Class newClass = Class.forName("DupClassSigAttrs");
  40             throw new RuntimeException("Expected ClassFormatError exception not thrown");
  41         } catch (java.lang.ClassFormatError e) {
  42             if (!e.getMessage().contains("Multiple Signature attributes in class file")) {
  43                 throw new RuntimeException("Wrong ClassFormatError exception thrown: " +
  44                                            e.getMessage());
  45             }
  46         }
  47 
  48         // Duplicate Method Signature attributes.
  49         try {
  50             Class newClass = Class.forName("DupMthSigAttrs");
  51             throw new RuntimeException("Expected ClassFormatError exception not thrown");
  52         } catch (java.lang.ClassFormatError e) {
  53             if (!e.getMessage().contains("Multiple Signature attributes for method")) {
  54                 throw new RuntimeException("Wrong ClassFormatError exception thrown: " +
  55                                            e.getMessage());
  56             }
  57         }
  58 
  59         // Duplicate Field Signature attributes.
  60         try {
  61             Class newClass = Class.forName("DupFldSigAttrs");
  62             throw new RuntimeException("Expected ClassFormatError exception not thrown");
  63         } catch (java.lang.ClassFormatError e) {
  64             if (!e.getMessage().contains("Multiple Signature attributes for field")) {
  65                 throw new RuntimeException("Wrong ClassFormatError exception thrown: " +
  66                                            e.getMessage());
  67             }
  68         }
  69 
  70         // Multiple Signature attributes but no duplicates.
  71         Class newClass = Class.forName("OkaySigAttrs");
  72     }
  73 }