Re: Custom Glibc collation version strings under LOCPATH

On 6/4/25 19:35, Thomas Munro wrote:
> On Thu, Jun 5, 2025 at 3:44 AM Joe Conway  wrote:
>> If you go from anything pre-glibc-2.21 to post-glibc-2.21 I think you
>> will find that even with the same data files you get a different sort.
>> The same patch that caused the performance regression [1] (still present
>> in up to date glibc) also cause changes in sort order via C code alone.

> Finding more cases probably involves running something a little like
> Jeremy's torture tests across a huge gallery of versions and
> combinations of cross-version recompiled definitions.  Or something
> like that...

Sounds like great fun!

;-)

-- 
Joe Conway
PostgreSQL Contributors Team
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