[11u] RFR 8224487: outputStream should not be copyable

Langer, Christoph christoph.langer at sap.com
Mon Jun 24 09:36:50 UTC 2019

Hi Thomas,

thanks, I see the patch in the system – just didn’t look right before ��


From: Thomas Stüfe <thomas.stuefe at gmail.com>
Sent: Montag, 24. Juni 2019 11:33
To: Langer, Christoph <christoph.langer at sap.com>
Cc: jdk-updates-dev at openjdk.java.net; HotSpot Open Source Developers <hotspot-dev at openjdk.java.net>
Subject: Re: [11u] RFR 8224487: outputStream should not be copyable

Thank you Christoph. Patch has been tested in 11u-dev for the last ~10 nights.

Cheers, Thomas

On Mon, Jun 24, 2019 at 9:44 AM Langer, Christoph <christoph.langer at sap.com<mailto:christoph.langer at sap.com>> wrote:
Hi Thomas,

I think this is good. Looks like you resolved the rejects correctly.

Will you run it through our test system? I don't see the patch in there currently...

Thanks & Best regards

> -----Original Message-----
> From: hotspot-dev <hotspot-dev-bounces at openjdk.java.net<mailto:hotspot-dev-bounces at openjdk.java.net>> On Behalf Of
> Thomas Stüfe
> Sent: Donnerstag, 13. Juni 2019 18:29
> To: jdk-updates-dev at openjdk.java.net<mailto:jdk-updates-dev at openjdk.java.net>
> Cc: HotSpot Open Source Developers <hotspot-dev at openjdk.java.net<mailto:hotspot-dev at openjdk.java.net>>
> Subject: [11u] RFR 8224487: outputStream should not be copyable
> Hi all,
> I would like to backport to 11u
> https://bugs.openjdk.java.net/browse/JDK-8224487.
> It is a precondition to backport three other fixes surrounding
> stringStream:
> -  https://bugs.openjdk.java.net/browse/JDK-8224193 (stringStream should
> not use Resource Area)
> -  https://bugs.openjdk.java.net/browse/JDK-8220394 (bufferedStream
> does
> not honor size limit)
> - https://bugs.openjdk.java.net/browse/JDK-8225225 (stringStream internal
> buffer should always be zero terminated)
> Original RFR discussion:
> https://mail.openjdk.java.net/pipermail/hotspot-dev/2019-
> May/038208.html
> Original patch: http://hg.openjdk.java.net/jdk/jdk/rev/0927d8c7296f
> Full patch (with 11u corrections):
> http://cr.openjdk.java.net/~stuefe/webrevs/backports/8224487-make-
> streams-not-copyable.patch
> Delta to original patch:
> http://cr.openjdk.java.net/~stuefe/webrevs/backports/8224487-make-
> streams-not-copyable-11u-changes.patch
> The patch disables copy and assignment on outputStream child classes, since
> this has been a source of errors (unintended sharing of the stream backing
> buffer between two instances of stringStream, for instance). It fixes all
> resulting build errors - which mostly indicate real errors.
> Patch did not apply cleanly since 11u misses some work in the event log
> Coleen did in 12, and a small change Lutz Schmidt did for the code heap
> printer.
> Thanks for the review.
> Cheers, Thomas

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