| From: | Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Ranier Vilela <ranier(dot)vf(at)gmail(dot)com>, Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)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) |
| Date: | 2021-07-22 06:20:28 |
| Message-ID: | 768db26c-cf9a-6943-38b1-2d5ac8cc86f2@enterprisedb.com |
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| Lists: | pgsql-bugs pgsql-hackers |
On 14.07.21 18:26, Tom Lane wrote:
> Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)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?
Similar here:
https://github.com/ensc/dietlibc/blob/master/lib/__v_printf.c#L188
I think unless we get counterexamples, this is all good.
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