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Date: Thu, 26 Jan 2006 10:59:09 +0100 (CET)
From: "Vladimir Ivanov (JIRA)" <jira@apache.org>
To: harmony-dev@incubator.apache.org
Subject: [jira] Created: (HARMONY-49) java.io.PushBackInputStream throws
 ArrayIndexOutOfBoundsException instead of IOException
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java.io.PushBackInputStream throws ArrayIndexOutOfBoundsException instead of IOException
----------------------------------------------------------------------------------------

         Key: HARMONY-49
         URL: http://issues.apache.org/jira/browse/HARMONY-49
     Project: Harmony
        Type: Bug
  Components: Classlib  
    Reporter: Vladimir Ivanov
    Priority: Minor


java.io.PushBackInputStream throws ArrayIndexOutOfBoundsException if array length is not enough. Specification says it should be IOException.

Code to reproduce:
import java.io.*; 
  
public class test29 { 

    public static void main(String args[]) { 
        try { 
          new PushbackInputStream( 
                new ByteArrayInputStream(new byte[] { 0 }), 2).unread(new byte[1], 0, 5); 
        } catch (IOException e) { 
	        System.out.println("PASSED: "+ e); 
        } catch (Throwable e) { 
	        System.out.println("FAILED: " + e); 
        } 
    } 
}

Steps to Reproduce: 
1. Build Harmony (check-out on 2006-01-25) j2se subset as described in README.txt. 
2. Compile test29.java using BEA 1.4 javac 
> javac -d . test29.java 
3. Run java using compatible VM (J9) 
> java -showversion test29


Output:
C:\tmp\tmp17>C:\jrockit-j2sdk1.4.2_04\bin\java.exe -showversion test29
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)

PASSED: java.io.IOException: Push back buffer is full

C:\tmp\tmp17>C:\harmony\trunk\deploy\jre\bin\java -showversion test29
java version 1.4.2 (subset)

(c) Copyright 1991, 2005 The Apache Software Foundation or its licensors, as applicable.
FAILED: java.lang.ArrayIndexOutOfBoundsException

C:\tmp\tmp17>

junit test:
------------------------ PushBackInputStreamTest.java ----------------------------------------------
import java.io.*; 
import junit.framework.*; 
  
public class PushBackInputStreamTest extends TestCase { 
    public void testUnread() { 
        try { 
          new PushbackInputStream( 
                new ByteArrayInputStream(new byte[] { 0 }), 2).unread(new byte[1], 0, 5); 
        } catch (IOException e) { 
        } catch (Throwable e) { 
	        fail("unexpected exception: " + e); 
        } 
    } 

   public static void main(String[] args) { 
        junit.textui.TestRunner.run(PushBackInputStreamTest.class); 
   } 
}


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