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     8191174
  27  * @summary Test verifies that PNGImageReader doesn't throw any undocumented
  28  *          Exception because of faulty calculation of scanline stride in
  29  *          PNGImageReader.
  30  * @run     main PngReaderLargeWidthStrideTest
  31  */
  32 
  33 import java.io.ByteArrayInputStream;
  34 import java.io.InputStream;
  35 import java.util.Base64;
  36 import javax.imageio.IIOException;
  37 import javax.imageio.ImageIO;
  38 
  39 public class PngReaderLargeWidthStrideTest {
  40 
  41     private static String inputImageBase64 = "iVBORw0KGgoAAAANSUhEUk////8AAAA"
  42             + "BCAAAAAA6fptVAAAACklEQVQYV2P4DwABAQEAWk1v8QAAAABJRU5ErkJgggo=";
  43 
  44     public static void main(String[] args) throws Exception {
  45 
  46         byte[] inputBytes = Base64.getDecoder().decode(inputImageBase64);
  47         InputStream in = new ByteArrayInputStream(inputBytes);
  48 
  49         try {
  50             ImageIO.read(in);
  51         } catch (IIOException e) {
  52             // Do nothing we expect it to throw IIOException, but if it throws
  53             // any other exception test will fail.
  54         }
  55     }
  56 }
  57