Bug in GZip extraction

FULL PRODUCT VERSION :
java version "1.6.0_23"
Java(TM) SE Runtime Environment (build 1.6.0_23-b05)
Java HotSpot(TM) 64-Bit Server VM (build 19.0-b09, mixed mode)

java version "1.6.0_23"
Java(TM) SE Runtime Environment (build 1.6.0_23-b05)
Java HotSpot(TM) Client VM (build 19.0-b09, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7600]

A DESCRIPTION OF THE PROBLEM :
Error in simple gzip extraction:

InputStream in = new GZIPInputStream(new FileInputStream("woaifayu-ef.dict.dz"));
        while (true) {
            int l = in.read();
            if (l < 0)
                break;
        }

It reports :
java.util.zip.ZipException: invalid stored block lengths
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:147)
at java.util.zip.GZIPInputStream.read(GZIPInputStream.java:92)
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:105)

Works perfect in previous versions.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run code:

InputStream in = new GZIPInputStream(new FileInputStream("woaifayu-ef.dict.dz"));
        while (true) {
            int l = in.read();
            if (l < 0)
                break;
        }

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Read without exceptions.
ACTUAL -
java.util.zip.ZipException: invalid stored block lengths
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:147)
at java.util.zip.GZIPInputStream.read(GZIPInputStream.java:92)
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:105)

ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.util.zip.ZipException: invalid stored block lengths
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:147)
at java.util.zip.GZIPInputStream.read(GZIPInputStream.java:92)
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:105)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class Test {
    public static void main(String a[]) throws Exception {
        InputStream in = new GZIPInputStream(new FileInputStream("woaifayu-ef.dict.dz"));
        while (true) {
            int l = in.read();
            if (l < 0)
                break;
        }
    }
}
---------- END SOURCE ----------