starting OpenJDK6 B25 promotion process - arraycopy stubs place prebarriers incorrectly

[Xerxes Rånby]

2012-04-14 00:44, Lana Steuck skrev:
> Hello,
> 
> It's time for OpenJDK6 B25 promotion (will be tagged with jdk6-b25).
> 
> Let me know if there are any additional changes to consider for this OpenJDK6 release.
> 

I would like to bring up:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7020521 - arraycopy stubs place prebarriers incorrectly
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7026307 - DEBUG MESSAGE: broken null klass on amd64 ( fixes a bug introduced by 7020521)
and suggest a backport of 7066307 and 7020521 to jdk6.

7026307: http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/348c0df561a9
7020521: http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/d89a22843c62

This would potentially fix rare
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007f89fc1a382b, pid=15693, tid=140230539037008"
crashes.

Cheers
Xerxes

> Thanks,
> -Lana