From: Robert Haas <rhaas@postgresql.org>
Date: Tue, 19 Dec 2023 20:00:23 +0000 (-0500)
Subject: Fix brown paper bag bug in 5c47c6546c413d5eb51c1626070a807026e6139d.
X-Git-Tag: REL_17_BETA1~1275
X-Git-Url: http://git.postgresql.org/gitweb/?a=commitdiff_plain;h=47f01d727e3a271bbff7d2f9db838e81d27bd495;p=postgresql.git

Fix brown paper bag bug in 5c47c6546c413d5eb51c1626070a807026e6139d.

The previous logic failed to work for anything other than the first
segment of a relation.

Report by Jakub Wartak. Patch by me.

Discussion: http://postgr.es/m/CAKZiRmwd3KTNMQhm9Bv4oR_1uMehXroO6kGyJQkiw9DfM8cMwQ@mail.gmail.com
---

diff --git a/src/backend/storage/file/reinit.c b/src/backend/storage/file/reinit.c
index 5df2517b46b..6e8eb786d0f 100644
--- a/src/backend/storage/file/reinit.c
+++ b/src/backend/storage/file/reinit.c
@@ -431,7 +431,7 @@ parse_filename_for_nontemp_relation(const char *name, RelFileNumber *relnumber,
 	else
 	{
 		/* Reject leading zeroes, just like we do for RelFileNumber. */
-		if (name[0] < '1' || name[0] > '9')
+		if (name[1] < '1' || name[1] > '9')
 			return false;
 
 		errno = 0;