Name: saC57035 Date: 12/01/96


This bug was found by St.Petersburg Java SQE team (by Alexander Kuzmin).


java.io.ByteArrayOutputStream write(byte[] b,int off,int len) works wrong
with huge len. It throws OutOfMemoryError instead of IndexOutOfBoundsException
in this case.


The Java Language Specification says:

"22.18.6 public void write(byte[] b, int off, int len)
throws NullPointerException, IndexOutOfBoundsException

Elements b[off] through b[off+len-1] are appended to the internal buffer.

If b is null, a NullPointerException is thrown.

If off is negative, or len is negative, or off+len is greater than the length
                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
of the array b, then an IndexOutOfBoundsException is thrown.

Overrides the write method of OutputStream (§22.15.3)."


Here is the example demonstrating the bug:

_______________________bug_test.java______________________________________
import java.io.*;

public class bug_test {
  public static void main( String argv[] ) {

 ByteArrayOutputStream y1;
 byte array1[]={'1','2','3','4','5'};// Simple array
 
   y1 = new ByteArrayOutputStream(5); //Create new ByteArrayOutputStream object
 
 try {
 y1.write(array1,0,Integer.MAX_VALUE);// Out of bounds
 } catch (IndexOutOfBoundsException e) // Must throw IndexOutOfBoundsException
  { System.out.println("OKAY");
  }
   catch (Throwable e)
  { System.out.println(" Not IndexOutOfBoundsException thrown, but "+e);
  }
   
  // Otherwise
  System.out.println("Otherwise:");
 

 try {
 y1.write(array1,0,array1.length+100);// Out of bounds
 } catch (IndexOutOfBoundsException e) // Must throw IndexOutOfBoundsException
  { System.out.println("OKAY");
  }
   catch (Throwable e)
  { System.out.println(" Not IndexOutOfBoundsException thrown, but "+e);
  }
 

  }
}

____________________________ Output __________________________________

 Not IndexOutOfBoundsException thrown, but java.lang.OutOfMemoryError
Otherwise:
OKAY
______________________________________________________________________

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