Re: rand48 replacement

From: Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Aleksander Alekseev <aleksander(at)timescale(dot)com>, PostgreSQL Developers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: rand48 replacement
Date: 2021-09-25 20:08:57
Message-ID: alpine.DEB.2.22.394.2109251929180.3216312@pseudo
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Hello Tom,

> Just FTR, I strongly object to your removal of process-startup srandom()
> calls.

Ok. The point of the patch is to replace and unify the postgres underlying
PRNG, so there was some logic behind this removal.

> Those are not only setting the seed for our own use, but also ensuring
> that things like random() calls within PL functions or other libraries
> aren't 100% predictable.

Sure, they shouldn't be predictable.

Attached v15 also does call srandom if it is there, and fixes yet another
remaining random call.


Attachment Content-Type Size
prng-15.patch text/x-diff 68.4 KB

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