From: Tom Lane <tgl@sss.pgh.pa.us>
To: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
cc: Ranier Vilela <ranier.vf@gmail.com>,
        Laurenz Albe <laurenz.albe@cybertec.at>,
        PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: printf %s with NULL pointer (was Re: BUG #17098: Assert failed on
 composing an error message when adding a type to an extension being dropped)
In-reply-to: <06a9ff0f-d1e9-0340-2f3b-180cefe41c7a@enterprisedb.com>
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Comments: In-reply-to Peter Eisentraut <peter.eisentraut@enterprisedb.com>
	message dated "Wed, 14 Jul 2021 08:05:54 +0200"
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Date: Wed, 14 Jul 2021 12:26:40 -0400
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Peter Eisentraut <peter.eisentraut@enterprisedb.com> writes:
> In this particular case, I would for example be quite curious how those 
> alternative minimal C libraries such as musl-libc handle this.

Interesting question, so I took a look:

https://git.musl-libc.org/cgit/musl/tree/src/stdio/vfprintf.c#n593

                    case 's':
			a = arg.p ? arg.p : "(null)";
			...

Any others you'd like to consider?

			regards, tom lane