Horton

pg_waldump: Fix error message for WAL files smaller than XLOG_BLCKSZ.

Andres Freund <andres@anarazel.de>

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Commit: cd83cb953606b94966981056e79dbb6c48751055
Author: Andres Freund <andres@anarazel.de>
Date: 2022-02-25T18:30:05Z
Releases: 15.0 
pg_waldump: Fix error message for WAL files smaller than XLOG_BLCKSZ.

When opening a WAL file smaller than XLOG_BLCKSZ (e.g. 0 bytes long) while
determining the wal_segment_size, pg_waldump checked errno, despite errno not
being set by the short read. Resulting in a bogus error message.

Author: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Discussion: https://postgr.es/m/20220214.181847.775024684568733277.horikyota.ntt@gmail.com
Backpatch: 11-, the bug was introducedin fc49e24fa

Files

PathChange+/−
src/bin/pg_waldump/pg_waldump.c modified +5 −8

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