Re: Should we remove -Wdeclaration-after-statement?

Andres Freund <andres@anarazel.de>

From: Andres Freund <andres@anarazel.de>
To: Jelte Fennema-Nio <postgres@jeltef.nl>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2024-01-29T19:58:04Z
Lists: pgsql-hackers
Hi,

On 2023-12-27 12:48:40 +0100, Jelte Fennema-Nio wrote:
> Postgres currently requires all variables to be declared at the top of
> the function, because it specifies -Wdeclaration-after-statement. One
> of the reasons that we had this warning was because C89 required this
> style of declaration. Requiring it everywhere made backporting easier,
> since some of our older supported PG versions needed to compile on
> C89. Now that we have dropped support for PG11 that reason goes away,
> since now all supported Postgres versions require C99. So, I think
> it's worth reconsidering if we want this warning to be enabled or not.

+1 for allowing declarations to be intermixed with code, -infinity for
changing existing code to do so.

Greetings,

Andres Freund