Name: saf@russia Date: 08/21/96


This bug was found by St.Petersburg Java SQE team (by Mikhail Gorshenev).

The java.lang.String.getBytes(int srcBegin,int srcEnd, byte dst[], int dstBegin) method does not work according to the
Java language specification when srcEnd > string length and srcBegin=srcEnd

The Java Language specification (Version 1.0, August 1, 1996)
says the following (please see item 20.12.14):

"20.12.14 public void getBytes(int srcBegin, int srcEnd, byte dst[],
int dstBegin) throws NullPointerException, IndexOutOfBoundsException

Characters are copied from this String object into the destination byte array
dst. Each byte receives only the eight low-order bits of the corresponding
character. The eight high-order bits of each character are not copied and do
not participate in the transfer in any way. The first character to be copied is
at index srcBegin; the last character to be copied is at index srcEnd-1
(thus the total number of characters to be copied is srcEnd-srcBegin). The
characters, converted to bytes, are copied into the subarray of dst starting
at index dstBegin and ending at index dstbegin+(srcEnd-srcBegin)-1.

If dst is null, then a NullPointerException is thrown.

An IndexOutOfBoundsException is thrown if any of the following is true:

      srcBegin is negative
      srcBegin is greater than srcEnd
      srcEnd is greater than the length of this String
      dstBegin is negative
      dstBegin+(srcEnd-srcBegin) is larger than dst.length "


Here is the minimized test demonstrating the bug:

----- java_lang_String_getBytes.java ---------------------------------------
class java_lang_String_getBytes {
  public static void main(String argv[]) {
      byte data[]=new byte[5];
      try {
        String s = "test";
        s.getBytes(10,10,data,0);
        System.out.println("Test failed: exception not thrown");
      }
      catch (IndexOutOfBoundsException e) {
        System.out.println("Test passed: " + e);
      }
  }
}

----- The output of the test: -------------------------
Test failed: exception not thrown
-------------------------------------------------------


Workaround:
None
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