[HARMONY-1103] [classlib][io] compatibility: different checks order for DataInputStream(null).readFully(byte[], int, int)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Component/s: Classlib
• Assignee: Paulex Yang
• Reporter: Vladimir Bossicard
• Created: 08/Aug/06 11:17
• Updated: 22/Sep/06 07:13
• Resolved: 18/Sep/06 06:43

Description

The harmony method java.io.DataInputStream(null).readFully(byte[], int, int) initially checks boundary values while RI checks stream.
It leads to different exceptions: NPE for RI and IndexOutOfBoundsException for Harmony.

================= test.java =======================
import java.io.DataInputStream;

public class test {
public static void main(String args[]) throws Exception {
new DataInputStream(null).readFully(new byte[]

{2, 2, 2, 2}

, 1, 18);
}
}
===============================================

Output:
C:\tmp\tmp17>C:\jrockit-jdk1.5.0-windows-ia32\bin\java.exe -cp . -showversion test
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
BEA WebLogic JRockit(R) (build dra-38972-20041208-2001-win-ia32, R25.0.0-75, GC: System optimized over throughput (initial strategy singleparpar))

java.lang.NullPointerException
at java.io.DataInputStream.readFully(DataInputStream.java:176)
at test.main(test.java:5)

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

(c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as applicable.
Exception in thread "main" java.lang.IndexOutOfBoundsException
at java.io.DataInputStream.readFully(DataInputStream.java:205)
at test.main(test.java:5)