Apparent JITC bug

[David Holmes]

Yes this is 5091921. As Vladimir says fixed in JDK7. But not planned to be 
fixed in JDK6

David

On 10/08/2011 1:18 AM, Vladimir Kozlov wrote:
> Dan,
>
> I was not able to reproduce the problem with your test but this problem
> looks like 5091921 bug which was fixed in jdk7. Could you, please, show how
> to reproduce the problem and version of java you are using (-version flag)?
>
> Regards,
> Vladimir
>
> Dan Hicks wrote:
>> This sequence fails on Linux JDK 1.6.0_21, and an unknown Java version on
>> OS X 10.6.8:
>>
>> |public class Prototype {
>> public static void main(String[] args) {
>> final int start = Integer.MAX_VALUE/2;
>> final int end = Integer.MAX_VALUE;
>> {
>> long b = 0;
>> for (int i = start; i < end; i++) {
>> b++;
>> }
>> System.out.println(b);
>> }
>> {
>> long b = 0;
>> for (int i = start; i < end; i++) {
>> b++;
>> }
>> System.out.println(b);
>> }
>> }
>> }
>> |
>>
>> The second loop terminates early, producing a different, random, erroneous
>> result when compared to the first.
>>
>> http://stackoverflow.com/questions/6995225/erroneous-for-loops-in-java
>>
>> I'm guessing the bug has something to do with trying to jump into a
>> just-JITed loop while executing.
>>
>> --
>> Dan Hicks
>> It is an ironic habit of human beings to run faster when we have lost our
>> way. --Rollo May
>>