Switching to HotSpot 14 on OpenJDK6

[Andrew Haley]

On 07/23/2009 05:36 PM, Andrew John Hughes wrote:
> 2009/7/23 Mark Reinhold <mr at sun.com>:
>>> From: Mark Reinhold <mr at sun.com>
>>> Date: Wed, 22 Jul 2009 14:48:10 -0700
>>> ...
>>>
>>> Your repo looks fine to me -- thanks for creating it.
>>>
>>> Shall I go ahead and replace the current jdk6/hotspot repo with this?
>>> (That is, does anyone have any concerns?)
>> Here's something (perhaps) to be concerned about: A recently-reported
>> regression in Sun's proprietary 6u14 (and hence also in hsx14) causes
>> debugging breakpoints to be ignored in some circumstances.  The bug is
>> reproducible with both the client and server VMs, but only using the
>> serial GC.
>>
>> The primary Sun bugid is 6862295 [1]; see also the downstream bug first
>> reported in Eclipse [2].  Dan Daugherty is working on a fix, which we'll
>> publish when available, but in the meantime hsx14 has this bug.
>>
>> Is the existence of this bug in hsx14 a reason to delay replacing the
>> current jdk6/hotspot repo with Andrew's newer version?  Let me know.

>>
>> [1] http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6862295
>> [2] https://bugs.eclipse.org/bugs/show_bug.cgi?id=279137
>>
> 
> It's a concern, no doubt about that, but not moving to hs14 because of
> it is a bit like shutting the stable door after the horse has bolted;
> both IcedTea and Sun's proprietary releases have been shipping hs14
> for some time.  I think the better course of action is to get the
> patch in as soon as it is available and then roll it out in new
> releases.

That sounds right to me.

> Besides, the proposed update doesn't (yet) move OpenJDK6 to HotSpot
> 14.  It rebases the repository so it's now at revision 0 of the
> current HotSpot7 repositories (plus the OpenJDK6 fixes), allowing
> changesets from the hs14 master and also the main HotSpot7 repository
> to be merged (as they all then have a common parent).  This is
> actually hs12b0 I believe (from b24 of OpenJDK7).

Do I take it that you intend soon to submit a patch that moves OpenJDK 6
to HS 14?

Andrew.