From 1a13dbff0175d74a0304d23b0d9e5624a982db74 Mon Sep 17 00:00:00 2001
From: Monty <monty@mariadb.org>
Date: Thu, 5 Jan 2023 15:43:14 +0200
Subject: [PATCH] MDEV-30327 Client crashes in print_last_query_cost

Fixed by calling init_pager() before tee_fprintf()
---
 client/mysql.cc              |  3 +++
 mysql-test/main/mysql.result |  3 +++
 mysql-test/main/mysql.test   | 11 ++++++++++-
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/client/mysql.cc b/client/mysql.cc
index a39bf36c016..9971410c0d8 100644
--- a/client/mysql.cc
+++ b/client/mysql.cc
@@ -4217,7 +4217,10 @@ static void print_last_query_cost()
 
   cur= mysql_fetch_row(result);
   if (strtod(cur[1], &end) != 0.0)
+  {
+    init_pager();
     tee_fprintf(PAGER, "%s: %s\n\n", cur[0], cur[1]);
+  }
 
 end:
   mysql_free_result(result);
diff --git a/mysql-test/main/mysql.result b/mysql-test/main/mysql.result
index 0b91b513b17..1792f09d3ac 100644
--- a/mysql-test/main/mysql.result
+++ b/mysql-test/main/mysql.result
@@ -637,3 +637,6 @@ drop table t1;
 WARNING: option '--enable-cleartext-plugin' is obsolete.
 1
 1
+#
+# MDEV-30327 Client crashes in print_last_query_cost
+#
diff --git a/mysql-test/main/mysql.test b/mysql-test/main/mysql.test
index 0f41add821a..5aa130f8a4c 100644
--- a/mysql-test/main/mysql.test
+++ b/mysql-test/main/mysql.test
@@ -709,10 +709,19 @@ drop table t1;
 --echo #
 --exec $MYSQL -NHe "select 1 as a"
 
-
 #
 # Test obsolete option --enable-cleartext-plugin
 # This should proceed with a warning
 #
 --echo
 --exec $MYSQL test --enable-cleartext-plugin -e "select 1"
+
+--echo #
+--echo # MDEV-30327 Client crashes in print_last_query_cost
+--echo #
+
+--disable_query_log
+--disable_result_log
+--exec $MYSQL --show-query-costs --port=$MASTER_MYPORT -e "show tables in mysql like 'foo'"
+--enable_result_log
+--enable_query_log