FULL PRODUCT VERSION :
C:\jdk1.6.0_05\bin>java -version
java version "1.6.0_05-ea"
Java(TM) SE Runtime Environment (build 1.6.0_05-ea-b04)
Java HotSpot(TM) Client VM (build 1.6.0_05-ea-b04, mixed mode, sharing)

C:\jdk1.6.0_05\bin>java -server -version
java version "1.6.0_05-ea"
Java(TM) SE Runtime Environment (build 1.6.0_05-ea-b04)
Java HotSpot(TM) Tiered VM (build 1.6.0_05-ea-b04, mixed mode)

FULL OS VERSION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
While running Eclipse with 1.6.0_05-ea, the following
First reported in http://forums.java.net/jive/thread.jspa?threadID=31465


I first hit this error on my 32-bit Windows XP machine at work.
However, I will not have time while at work to investigate further.

Luckily, in doing some more testing at home on my Windows XP 64-bit machine I was able to trigger the exact same bug with the 64-bit server VM running Eclipse-3.4-M2 for Windows x86-64.
I am attaching that new error log for completeness.

The Eclipse code in question is available here: http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.core.resources/src/org/eclipse/core/internal/dtree/DataTreeNode.java?revision=1.20&view=markup

As of yet, I have been unable to produce a standalone test case... still, in reviewing DataTreeNode.forwardDeltaWith, I would hope it might be more evident to you how that code (with all the looping, array allocation and System.arrayCopy calls) might stress the hotspot server compiler.

FYI, I have been running Eclipse (misc. versions) with 1.6.0_02-b05 since it was released, so this is *definitely* a recent regression introduced in 1.6.0_05-ea.


THE PROBLEM WAS REPRODUCIBLE WITH -Xint FLAG: Did not try

THE PROBLEM WAS REPRODUCIBLE WITH -server FLAG: Did not try

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Attached seperatly


REPRODUCIBILITY :
This bug can be reproduced occasionally.