Re: pg_waldump: support decoding of WAL inside tarfile

From: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>
To: Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com>
Cc: Sami Imseih <samimseih(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Tomas Vondra <tomas(at)vondra(dot)me>, Andres Freund <andres(at)anarazel(dot)de>, Michael Paquier <michael(at)paquier(dot)xyz>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Amul Sul <sulamul(at)gmail(dot)com>, Zsolt Parragi <zsolt(dot)parragi(at)percona(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Chao Li <li(dot)evan(dot)chao(at)gmail(dot)com>, Anthonin Bonnefoy <anthonin(dot)bonnefoy(at)datadoghq(dot)com>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Jakub Wartak <jakub(dot)wartak(at)enterprisedb(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: pg_waldump: support decoding of WAL inside tarfile
Date: 2026-04-10 07:57:56
Message-ID: CA+hUKGJkeTVuq5u5WKJm6xkwmW577UuQ7fA=PyBCSR3h9g2GtQ@mail.gmail.com
Views: Whole Thread | Raw Message | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

Nitpicking code review for commit b15c1513:

+read_archive_wal_page(XLogDumpPrivate *privateInfo, XLogRecPtr targetPagePtr,
+ Size count, char *readBuff)

I thought we agreed to stop using Size for new code? size_t has been
around since C89.

+ pg_fatal("WAL segment \"%s\" in archive \"%s\" is too short: rea
d %lld of %lld bytes",
+ fname, privateInfo->archive_name,
+ (long long int) (count - nbytes),
+ (long long int) count);

Why cast to long long int? That's the sort of thing we used to have
to do for int64 (but no longer), but here it's size_t anyway. %zu has
been around since C99.

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Thomas Munro 2026-04-10 08:14:07 Re: Trying out libarchive for reading user-generated WAL tarballs
Previous Message Michael Paquier 2026-04-10 07:56:33 Re: Fix pgstat_database.c to honor passed database OIDs