gt:         if (readctr == endoffile) {
context: /*
   * Copyright 1998-1999 Sun Microsystems, Inc.  All Rights Reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
   * CA 95054 USA or visit www.sun.com if you need additional information or
   * have any questions.
   */
  
  /*
   * @test
   * @bug 4008296 4008293 4190090 4193729
   * @summary Check for correct handling of parameters to
   *          XXXXInputStream.read(b, off, len).
   *
   */
  
  import java.io.*;
  import java.util.zip.ZipInputStream;
  import java.util.zip.InflaterInputStream;
  import java.util.zip.DeflaterOutputStream;
  
  public class ReadParams {
  
      /* check for correct handling of different values of off and len */
      public static void doTest(InputStream in) throws Exception {
  
          int off[] = {-1, -1,  0, 0, 33, 33, 0, 32, 32, 4, 1, 0,  -1,
                       Integer.MAX_VALUE, 1, Integer.MIN_VALUE,
                       Integer.MIN_VALUE, 1};
          int len[] = {-1,  0, -1, 33, 0, 4, 32, 0, 4, 16, 31, 0,
                       Integer.MAX_VALUE, Integer.MAX_VALUE, Integer.MAX_VALUE,
                       1, -1, Integer.MIN_VALUE};
          boolean results[] = { false,  false,  false, false, false, false,
                                true, true, false, true, true, true,  false,
                                false, false, false, false, false};
          int numCases = off.length;
          byte b[] = new byte[32];
          int numBad = 0;
  
          for(int i = 0; i < numCases; i++) {
              try {
                  in.read(b , off[i] , len[i]);
              } catch (IndexOutOfBoundsException aiobe) {
                  if (results[i]) {
                      System.err.println("Error:IndexOutOfBoundsException thrown"+
                                         " for read(b, " + off[i] + " " + len[i] +
                                         " ) on " + in + "\nb.length = 32");
                      numBad++;
                  } else {
                      /* System.err.println("PassE: " + off[i] + " " + len[i]); */
                  }
                  continue;
              } catch (OutOfMemoryError ome) {
                  System.err.println("Error: OutOfMemoryError in read(b, " +
                                     off[i] + " " + len[i] + " ) on " + in +
                                     "\nb.length = 32");
                  numBad++;
                  continue;
              }
              if (!results[i]) {
                  System.err.println("Error:No IndexOutOfBoundsException thrown"+
                                     " for read(b, " + off[i] + " " + len[i] +
                                     " ) on " + in + "\nb.length = 32");
                  numBad++;
              } else {
                  /* System.err.println("Pass: " + off[i] + " " + len[i]); */
              }
          }
  
          if (numBad > 0) {
              throw new RuntimeException(in + " Failed " + numBad + " cases");
          } else {
              System.err.println("Successfully completed bounds tests on " + in);
          }
      }
  
      /* check for correct handling of null b */
      public static void doTest1(InputStream in) throws Exception {
          byte b[] = null;
          try {
              in.read(b, 0, 32);
          } catch (NullPointerException npe) {
              System.err.println("SuccessFully completed null b test on " + in);
              return;
          }
          throw new RuntimeException(in + " Failed null b test");
      }
  
      public static void main(String args[]) throws Exception{
          /* initialise stuff */
          File fn = new File("x.ReadBounds");
          FileOutputStream fout = new FileOutputStream(fn);
          for (int i = 0; i < 32; i++) {
              fout.write(i);
          }
          fout.close();
  
          byte b[] = new byte[64];
          for(int i = 0; i < 64; i++) {
              b[i] = 1;
          }
  
          /* test all input streams */
          FileInputStream fis = new FileInputStream(fn);
          doTest(fis);
          doTest1(fis);
          fis.close();
  
          BufferedInputStream bis =
              new BufferedInputStream(new MyInputStream(1024));
          doTest(bis);
          doTest1(bis);
          bis.close();
  
          ByteArrayInputStream bais = new ByteArrayInputStream(b);
          doTest(bais);
          doTest1(bais);
          bais.close();
  
          FileOutputStream fos = new FileOutputStream(fn);
          ObjectOutputStream oos = new ObjectOutputStream(fos);
          oos.writeInt(12345);
          oos.writeObject("Today");
          oos.writeObject(new Integer(32));
          ObjectInputStream ois = new ObjectInputStream(new FileInputStream(fn));
          doTest(ois);
          doTest1(ois);
          ois.close();
  
          DataInputStream dis = new DataInputStream(new MyInputStream(1024));
          doTest(dis);
          doTest1(dis);
          dis.close();
  
          LineNumberInputStream lis =
              new LineNumberInputStream(new MyInputStream(1024));
          doTest(lis);
          doTest1(lis);
          lis.close();
  
          PipedOutputStream pos = new PipedOutputStream();
          PipedInputStream pis = new PipedInputStream();
          pos.connect(pis);
          pos.write(b, 0, 64);
          doTest(pis);
          doTest1(pis);
          pis.close();
  
          PushbackInputStream pbis =
              new PushbackInputStream(new MyInputStream(1024));
          doTest(pbis);
          doTest1(pbis);
          pbis.close();
  
          StringBufferInputStream sbis =
              new StringBufferInputStream(new String(b));
          doTest(sbis);
          doTest1(sbis);
          sbis.close();
  
          SequenceInputStream sis =
              new SequenceInputStream(new MyInputStream(1024),
                                      new MyInputStream(1024));
          doTest(sis);
          doTest1(sis);
          sis.close();
  
          ZipInputStream zis = new ZipInputStream(new FileInputStream(fn));
          doTest(zis);
          doTest1(zis);
          zis.close();
  
          byte[] data = new byte[256];
          ByteArrayOutputStream bos = new ByteArrayOutputStream();
          DeflaterOutputStream dos = new DeflaterOutputStream(bos);
          dos.write(data, 0, data.length);
          dos.close();
          InflaterInputStream ifs = new InflaterInputStream
              (new ByteArrayInputStream(bos.toByteArray()));
          doTest(ifs);
          doTest1(ifs);
          ifs.close();
  
          /* cleanup */
          fn.delete();
      }
  }
  
  /* An InputStream class used in the above tests */
  class MyInputStream extends InputStream {
  
      private int readctr = 0;
      private long endoffile;
  
      public MyInputStream(long endoffile) {
          this.endoffile = endoffile;
      }
  
      public int read() {
  