From e27bfeca6a0fb83047472470c56742b15f6bc0c0 Mon Sep 17 00:00:00 2001
From: Michael Widenius <monty@mariadb.org>
Date: Fri, 6 Apr 2018 12:31:13 +0300
Subject: [PATCH] Added test case for MDEV-15742 to prove that it works

MDEV-15742 Assertion `table_share->tmp_table != NO_TMP_TABLE ||
m_lock_type == 1' failed in handler::ha_write_row
---
 mysql-test/suite/sql_sequence/lock.result | 10 ++++++++++
 mysql-test/suite/sql_sequence/lock.test   | 16 ++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/mysql-test/suite/sql_sequence/lock.result b/mysql-test/suite/sql_sequence/lock.result
index a3bde97d3a3..05a06b218b3 100644
--- a/mysql-test/suite/sql_sequence/lock.result
+++ b/mysql-test/suite/sql_sequence/lock.result
@@ -17,3 +17,13 @@ a
 select * from t2;
 a
 drop tables s1, t1, t2;
+CREATE SEQUENCE s1;
+LOCK TABLE s1 READ;
+SELECT NEXTVAL(s1);
+ERROR HY000: Table 's1' was locked with a READ lock and can't be updated
+SELECT NEXTVAL(s);
+ERROR HY000: Table 's' was not locked with LOCK TABLES
+DROP SEQUENCE s1;
+ERROR HY000: Table 's1' was locked with a READ lock and can't be updated
+unlock tables;
+DROP SEQUENCE s1;
diff --git a/mysql-test/suite/sql_sequence/lock.test b/mysql-test/suite/sql_sequence/lock.test
index caa8843bb54..2208a1f1ffa 100644
--- a/mysql-test/suite/sql_sequence/lock.test
+++ b/mysql-test/suite/sql_sequence/lock.test
@@ -22,3 +22,19 @@ unlock tables;
 select * from t1;
 select * from t2;
 drop tables s1, t1, t2;
+
+#
+# MDEV-15742 Assertion `table_share->tmp_table != NO_TMP_TABLE ||
+# m_lock_type == 1' failed in handler::ha_write_row
+#
+
+CREATE SEQUENCE s1;
+LOCK TABLE s1 READ;
+--error ER_TABLE_NOT_LOCKED_FOR_WRITE
+SELECT NEXTVAL(s1);
+--error ER_TABLE_NOT_LOCKED
+SELECT NEXTVAL(s);
+--error ER_TABLE_NOT_LOCKED_FOR_WRITE
+DROP SEQUENCE s1;
+unlock tables;
+DROP SEQUENCE s1;