Question on status of a few bugs in OpenJDK 6

Krystal Mok rednaxelafx at
Thu Mar 8 09:54:06 PST 2012

Hi Kelly,

Thanks for the reply. I understand that we should let the older versions
slowly fall out of the picture and move on.
The reason I'm asking is exactly because JDK6 is nearing EOL. Right now
it's still getting small updates and fixes.
What I'm wishing for is to get the patches that backported to JDK6 into
OpenJDK6 as well. They should be bug fixes only, no new features, those
that already got tested in the product JDK6 updates.
And, a way of tracking what changes will go into future OpenJDK6 releases,
so that if we know there's a patch that we really need that's not going in,
we can patch it ourselves in our own builds.

Kris Mok

On Fri, Mar 9, 2012 at 1:09 AM, Kelly O'Hair <kelly.ohair at> wrote:

> OpenJDK6 is driven mostly by the contributors. It is not an extremely
> active development forest.
> The jdk6-dev AT alias is the communication path, and yes
> it's very quiet of late.
> I usually do the approvals of changes and will co-ordinate any new
> releases, but I let the community
> drive what gets into it for the most part. Hopefully I'm approving the
> correct changes, and rejecting
> the right ones. I would of course require that any OpenJDK6 hotspot
> changes will have been reviewed
> by the appropriate hotspot team members.
> Significant changes might not be a good idea, with OpenJDK6 it's  mostly
> 'let sleeping dogs lie' ;^)
> -kto
> On Mar 8, 2012, at 3:37 AM, Krystal Mok wrote:
> Hi all,
> Guess I'm asking on the wrong list, but I don't know which list I should
> be sending this to for OpenJDK 6-only  issues. The jdk6-dev list is mostly
> silent now, doesn't seem to be the right place, neither.
> Maybe I should be asking the sustaining team?
> I was looking at what changes went into recent OpenJDK 6 releases. Turns
> out OpenJDK 6 build 23 is the closest version to JDK 6 update 25, and
> OpenJDK 6b24 is the closest version to 6u30. Reading through the release
> changes [1][2], though, tells that:
> 1. The loop optimization bug that crashes the VM is fixed:
>   7070134: Hotspot crashes with sigsegv from PorterStemmer
> 2. A few other related bugs aren't included in OpenJDK 6 yet, as of now:
>   5091921: Sign flip issues in loop optimizer
>   7052494: Eclipse test fails on JDK 7 b142
>   7004535: Clone loop predicate during loop unswitch
>   7068051: SIGSEGV in PhaseIdealLoop::build_loop_late_post on T5440
>   7044738: Loop unroll optimization causes incorrect result
>   7077439: Possible reference through NULL in loopPrdicate.cpp:726
> I suppose some of these fixes are actually in the product JDK 6u29+
> already, like 7044738.
> So, questions:
> * Could anyone help identify whether these bugs affect OpenJDK 6 or not?
> * If they do, what are the plans for porting the fixes back to OpenJDK 6?
> * And what is the general plan for future maintence of OpenJDK 6?
> * Is there any place in the public that we can track what's going to be
> backported into OpenJDK 6?
> * Will it sort of EOL along with the product JDK 6?
> Thanks,
> Kris Mok
> [1]:
> [2]:
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