Re: BUG #18779: Segmentation fault while trying to connect via psql

On Fri, Jan 17, 2025 at 6:51 AM PG Bug reporting form <
noreply@postgresql.org> wrote:

> The following bug has been logged on the website:
>
> Bug reference:      18779
> Logged by:          Daniel Elishakov
> Email address:      dan-eli@mail.ru
> PostgreSQL version: 16.6
> Operating system:   Debian GNU/Linux 12 (bookworm)
> Description:
>
> This bug takes place in Debian-based operating systems. To replicate this
> bug please do following:
> 1) Install and initialize PostgreSQL dbms
>

I think we need more details. There are multiple ways to do both of those
things.


> 2) Switch user to root (sudo -i)
> 3) Switch user to postgres
>

What if you just use one command, sudo -i -u postgres?


> 4) run command psql -U postgres -h localhost (may run multiple times to see
> the bug)
>
> Looks like this bug occurs because root user has ENV variable KRB5CCNAME,
> while postgres does not.


What did you do to make this happen?  A default debian installation does
have KRB5CCNAME set for root.

Cheers,

Jeff