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From "Vladimir Ivanov (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-667) [classlib][io]java.io.BufferedInputStream.skip(int n) unexpected NPE
Date Mon, 26 Jun 2006 11:45:29 GMT
[classlib][io]java.io.BufferedInputStream.skip(int n) unexpected NPE
--------------------------------------------------------------------

         Key: HARMONY-667
         URL: http://issues.apache.org/jira/browse/HARMONY-667
     Project: Harmony
        Type: Bug

  Components: Classlib  
    Reporter: Vladimir Ivanov


The java.io.BufferedInputStream.skip(int n) throws unexpected NPE if object was constructed
as BufferedInputStream(null, ...) while RI throws IOException. The same behavior observed
for java.io.BufferedInputStream.close()  too.

=================== test.java ============================
import java.io.*;

public class test {
   public static void main (String[] args) { 
            BufferedInputStream buf = new BufferedInputStream(null,5);
            try {
                buf.skip(1);
            } catch (Exception e) {
                e.printStackTrace();
            }                         
            try {
                buf.close();
            } catch (Exception e) {
                e.printStackTrace();
            }                         
   }   
}
======================================================

Output:
C:\tmp\tmp17>C:\jrockit-j2sdk1.4.2_04\bin\java.exe -showversion test
java version "1.4.2_04"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_04-b05)
BEA WebLogic JRockit(TM) 1.4.2_04 JVM  (build ari-31788-20040616-1132-win-ia32, Native Threads,
GC strategy: parallel)

java.io.IOException: Stream closed
        at java.io.BufferedInputStream.ensureOpen()V(BufferedInputStream.java:120)
        at java.io.BufferedInputStream.skip(J)J(BufferedInputStream.java:296)
        at test.main([Ljava.lang.String;)V(test.java:7)

C:\tmp\tmp17>C:\harmony\trunk_0427\deploy\jdk\jre\bin\java.exe -showversion test
java version 1.5 (subset)

(c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as applicable.
java.lang.NullPointerException
        at java.io.BufferedInputStream.skip(BufferedInputStream.java:339)
        at test.main(test.java:7)
java.lang.NullPointerException
        at java.io.FilterInputStream.close(FilterInputStream.java:68)
        at java.io.BufferedInputStream.close(BufferedInputStream.java:112)
        at test.main(test.java:12)

C:\tmp\tmp17>

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