Horton

Re: Avoid leaking system path from pg_available_extensions

Jim Jones <jim.jones@uni-muenster.de>

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From: Jim Jones <jim.jones@uni-muenster.de>
To: Matheus Alcantara <matheusssilv97@gmail.com>, Chao Li <li.evan.chao@gmail.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Cc: Andrew Dunstan <andrew@dunslane.net>
Date: 2026-05-22T07:25:54Z
Lists: pgsql-hackers

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  1. Avoid leaking system path from pg_available_extensions

On 21/05/2026 17:12, Matheus Alcantara wrote:
> I've reproduced the issue and the fix looks correct to me.

same here, +1

I was wondering if creating a constant for it would be, stylistically
speaking, a cleaner solution. For instance:

#define EXTENSION_SYSTEM_MACRO  "$system"

I realize that it's used only inside get_extension_control_directories()
but since it is even mentioned in the docs, I guess it wouldn't be a bad
idea.

Thanks!

Best, Jim