Name: jb33418 Date: 09/29/2000


java version "1.3.0beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0beta-b07)
Java HotSpot(TM) Client VM (build 1.3.0beta-b04, mixed mode)

When constructing an ArrayList from an existing List,
the constructor fails if the list has 19522579 or more
elements. This can be tested simply using the following:



import java.util.*;

public class ListTest {
    public static void main(String[] args) throws Exception {
if (args.length < 1)
throw new Exception("usage: test.ListTest <count>");

int count = Integer.parseInt(args[0]);

String myObject = "Hello, world";
List myList = Collections.nCopies(count, myObject);
List myList2 = new ArrayList(myList);
    }
}


The command line:
  java -Xmx300M ListTest 19522578
succeeds, but:
  java -Xmx300M ListTest 19522579
fails with:

Exception in thread "main" java.lang.NegativeArraySizeException
        at java.util.ArrayList.<init>(ArrayList.java:120)
        at test.ListTest.main(ListTest.java:16)

NB. Exact heap size is not important, so long as it is large enough
to construct the list.

  To date, I have seen this problem in the Sun 1.3beta release
for Linux, and also in the Compaq 1.2.2-3 release for Tru64
Unix. I believe that this is a general problem in the class
libraries.
(Review ID: 106783)
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