From 74e6822a96cd896da5d2dffdd4cf9682fbb6d688 Mon Sep 17 00:00:00 2001
From: Sergei Petrunia <sergey@mariadb.com>
Date: Thu, 23 Apr 2026 13:52:21 +0300
Subject: [PATCH] MDEV-39368: When replay query fails, print "*** REPLAY FAILED
 ***" instead of EXPLAIN output.

---
 client/mysqltest.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/client/mysqltest.cc b/client/mysqltest.cc
index 62214db6688..26043d6113b 100644
--- a/client/mysqltest.cc
+++ b/client/mysqltest.cc
@@ -11402,6 +11402,13 @@ static void execute_replay_queries(const char *sql_script, DYNAMIC_STRING *ds)
                   mysql_error(replay_server_mysql));
           fprintf(stdout, "ReplayTest: Failed query was: %.*s\n", (int)query_len, query_start);
           print_replay_test_location(stdout);
+          
+          /* If this was an EXPLAIN query, add failure marker to result output */
+          if (is_explain)
+          {
+            dynstr_append_mem(&result, "*** REPLAY FAILED ***\n", 22);
+          }
+          
           goto cleanup;
         }