From 3e91da80109048dfcd6f499ff2921bcc5cced882 Mon Sep 17 00:00:00 2001
From: Artem Gavrilov <artem.gavrilov@percona.com>
Date: Tue, 11 Jun 2024 17:39:42 +0200
Subject: [PATCH] Fix nesting level counting for older PG version

---
 pg_stat_monitor.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pg_stat_monitor.c b/pg_stat_monitor.c
index 80845e9b..bd6bef63 100644
--- a/pg_stat_monitor.c
+++ b/pg_stat_monitor.c
@@ -1233,6 +1233,8 @@ pgsm_ProcessUtility(PlannedStmt *pstmt, const char *queryString,
 		 * To be absolutely certain we don't mess up the nesting level,
 		 * evaluate the bump_level condition just once.
 		 */
+
+#if PG_VERSION_NUM >= 17000
 		bool		bump_level =
 			!IsA(parsetree, ExecuteStmt) &&
 			!IsA(parsetree, PrepareStmt) &&
@@ -1243,6 +1245,8 @@ pgsm_ProcessUtility(PlannedStmt *pstmt, const char *queryString,
 
 		PG_TRY();
 		{
+#endif
+
 #if PG_VERSION_NUM >= 140000
 			if (prev_ProcessUtility)
 				prev_ProcessUtility(pstmt, queryString,
@@ -1279,6 +1283,8 @@ pgsm_ProcessUtility(PlannedStmt *pstmt, const char *queryString,
 										dest,
 										completionTag);
 #endif
+
+#if PG_VERSION_NUM >= 17000
 			if (bump_level)
 				nesting_level--;
 		}
@@ -1290,6 +1296,7 @@ pgsm_ProcessUtility(PlannedStmt *pstmt, const char *queryString,
 		}
 		PG_END_TRY();
 	}
+#endif
 }
 
 #if PG_VERSION_NUM < 130000