Name: rmT116609 Date: 02/06/2003


FULL PRODUCT VERSION :
java version "1.4.1_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_01-b01)
Java HotSpot(TM) Client VM (build 1.4.1_01-b01, mixed mode)

FULL OPERATING SYSTEM VERSION :
Microsoft Windows 2000 [Version 5.00.2195]

A DESCRIPTION OF THE PROBLEM :
Inflator input stream returns true from the markSupported
method, yet doesn't support resetting to a mark. The
submitted example program works if the deflator and inflator
are removed.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
See example program.


EXPECTED VERSUS ACTUAL BEHAVIOR :
expected:
one
two
We can mark this stream.
one
one

actual:
one
two
We can mark this stream.
one
two

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.io.*;
import java.util.zip.*;

public class Test {

public static void main(String[] argv) throws Exception {
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    DataOutputStream out =
        new DataOutputStream(
            new DeflaterOutputStream( bytes ) );
    out.writeUTF("one");
    out.writeUTF("two");
    out.close();

    DataInputStream in =
        new DataInputStream(
            new InflaterInputStream(
                new ByteArrayInputStream( bytes.toByteArray() ) ) );

    System.out.println(in.readUTF()); // prints "one"
    System.out.println(in.readUTF()); // print "two"

    // So far, so good. Now the bug.
    in = // the same DataInputStream as before
        new DataInputStream(
            new InflaterInputStream(
                new ByteArrayInputStream( bytes.toByteArray() ) ) );

    if (in.markSupported())
        System.out.println("We can mark this stream.");
    in.mark(2000);
    System.out.println(in.readUTF()); // prints "one"
    in.reset();
    System.out.println(in.readUTF()); // prints "two", but should print "one"
}

}
---------- END SOURCE ----------
(Review ID: 164169)
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