Name: mlR10151 Date: 04/04/2001



The spec. for the MemoryCacheImageInputStream.read(byte[],int,int) says:

public int read(byte[] b, int off, int len) throws IOException
. . .
Throws:
   IndexOutOfBoundsException - if off is negative, len is negative, or off + len is greater than b.length.
   NullPointerException - if b is null.

But it does not throw any exception in all these cases:

===================== a.java =======================
import java.io.*;
import javax.imageio.stream.*;

public class a {
    public static void main (String argv[]) throws Exception {
        InputStream istream = new ByteArrayInputStream(new byte[100]);
        MemoryCacheImageInputStream mciis = new MemoryCacheImageInputStream(istream);

        mciis.read(new byte[0], 1, 0);
        mciis.read(new byte[1], 0, -1);
        mciis.read(new byte[1], -1, 0);
        mciis.read(null, 0, 0);

        System.out.println("Failed");
    }
}
===================== log =======================
% java -version
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b58)
Java HotSpot(TM) Client VM (build 1.4.0-beta-b58, mixed mode)
% java a
Failed


This bug causes failure of the new JCK test
api/javax_imageio/stream/MemoryCacheImageInputStream/index.html#flush


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