From: Robert Haas <rhaas@postgresql.org>
Date: Thu, 27 Jan 2022 20:11:19 +0000 (-0500)
Subject: Avoid referencing Z_DEFAULT_COMPRESSION outside HAVE_LIBZ.
X-Git-Tag: REL_15_BETA1~819
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8ee940843dfed6623b0a0d0b15080aa469116ce0;p=thirdparty%2Fpostgresql.git

Avoid referencing Z_DEFAULT_COMPRESSION outside HAVE_LIBZ.

Because that's bad.

Discussion: http://postgr.es/m/20220127174545.GV23027@telsasoft.com
---

diff --git a/src/bin/pg_basebackup/pg_basebackup.c b/src/bin/pg_basebackup/pg_basebackup.c
index 851f03ca81a..c351084db31 100644
--- a/src/bin/pg_basebackup/pg_basebackup.c
+++ b/src/bin/pg_basebackup/pg_basebackup.c
@@ -1919,7 +1919,7 @@ BaseBackup(void)
 		}
 		AppendStringCommandOption(&buf, use_new_option_syntax,
 								  "COMPRESSION", compressmethodstr);
-		if (compresslevel != 0 && compresslevel != Z_DEFAULT_COMPRESSION)
+		if (compresslevel >= 1) /* not 0 or Z_DEFAULT_COMPRESSION */
 			AppendIntegerCommandOption(&buf, use_new_option_syntax,
 									   "COMPRESSION_LEVEL", compresslevel);
 	}