Re: Happy New Year 2024 & Freeze for the upcoming glibc 2.39 release

[Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>]

On 01/01/24 10:18, Andreas K. Huettel wrote:
> Hi all, 
> 
> first of all, a happy new year to all of you. Let us hope for a more peaceful 2024.
> 
> We follow for the upcoming glibc 2.39 the same schedule as usual.
> 
> - January 1-11, "slushy ABI freeze"
>   * No new ABI additions.
>   * ABI corrections should be reviewed, RM approval not required.
>   * Avoid any changes that require action by the ports (including all
>     that require ulps regeneration)
>   * Bug fixes.
>   * Monday patch review switches to reviewing critical bug list and
>     ABI issues.
> 
> The planning section of our 2.39 wiki page lists at the moment the following items:
> https://sourceware.org/glibc/wiki/Release/2.39#Planning
> 
> * Release blockers
>   - Revert to original qsort implementation and apply subsequent mergesort changes with heapsort as fallback.
>         Attempts to make changes to qsort have shown deep application dependencies on undocumented behaviour.
>         In order to preserver application compatibility we need to revert the less conservative changes.
>         It would be good to revert to the original known state and then copy in some of the final changes. 

I just sent a new version [1], which should address the remarks Florian
has raised.

>   - AArch64 SME support https://patchwork.sourceware.org/project/glibc/list/?series=28136 

I already reviewed it and modules some minor nits it should ready to land.


> * Desirable this release?
>   - Add clone3 support for multiple architectures (mips and arm missing)

It is already done.

>   - Remove ia64-linux-gnu

I am just warning Linux 6.7 to be officially release.  It might also require
some minor updates on the exported syscall numbers and some headers constants.

>   - Implement C23 <stdbit.h> 
> 
> Please update what is in the meantime done / obsolete / ..., ideally with links to the commits or bugs.

Since we are aiming to implement all the remaining C23 bits, I would
like to add my floating-point round fixes as well [2]

> 
> What else should we add here that still needs to go into 2.39?

The fstat alpha/sparc64 fix for sure [3].  I would like to add some gnulib
sync [4], but I can backport it if required as well.

> 
> - January 12-31, "hard ABI freeze"
>   * Noncritical bug fixes.
>   * No ABI changes without RM discussion.
>   * High risk bug fixes should be discussed on the list.
> 
> - February 1
>   * glibc 2.39 release
> 
> If you have any comments or objections, please reply to the list.
>   
> Cheers,
> Andreas
> 

[1] https://patchwork.sourceware.org/project/glibc/patch/20240102141500.3300552-1-adhemerval.zanella@linaro.org/
[2] https://patchwork.sourceware.org/project/glibc/list/?series=28918
[3] https://patchwork.sourceware.org/project/glibc/patch/20240102143152.3477636-1-adhemerval.zanella@linaro.org/
[4] https://patchwork.sourceware.org/project/glibc/patch/20231023214527.3628194-1-adhemerval.zanella@linaro.org/