Horton

Re: Make all Perl warnings fatal

Alvaro Herrera <alvherre@alvh.no-ip.org>

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From: Alvaro Herrera <alvherre@alvh.no-ip.org>
To: Peter Eisentraut <peter@eisentraut.org>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2023-08-22T13:20:28Z
Lists: pgsql-hackers 
On 2023-Aug-10, Peter Eisentraut wrote:

> I wanted to figure put if we can catch these more reliably, in the style of
> -Werror.  AFAICT, there is no way to automatically turn all warnings into
> fatal errors.  But there is a way to do it per script, by replacing
> 
>     use warnings;
> 
> by
> 
>     use warnings FATAL => 'all';
> 
> See attached patch to try it out.

BTW in case we do find that there's some unforeseen problem and we want
to roll back, it would be great to have a way to disable this without
having to edit every single Perl file again later.  However, I didn't
find a way to do it -- I thought about creating a separate PgWarnings.pm
file that would do the "use warnings FATAL => 'all'" dance and which
every other Perl file would use or include; but couldn't make it work.
Maybe some Perl expert knows a good answer to this.

Maybe the BEGIN block of each file can `eval` a new PgWarnings.pm that
emits the "use warnings" line?

-- 
Álvaro Herrera         PostgreSQL Developer  —  https://www.EnterpriseDB.com/
"No renuncies a nada. No te aferres a nada."

Commits

  1. Add missing FATAL => 'all' to a use warnings in Perl

  2. Make all Perl warnings fatal in 043_wal_replay_wait.pl

  3. Add tap test for pg_signal_autovacuum role

  4. Implement pg_wal_replay_wait() stored procedure

  5. Fix an issue in PostgreSQL::Test::Cluster:psql()

  6. Make all Perl warnings fatal

  7. Fix a warning in Perl test code

  8. Avoid use of Perl getprotobyname