1 files changed, 36 insertions, 0 deletions
diff --git a/mysql-test/main/empty_user_table.test b/mysql-test/main/empty_user_table.test
new file mode 100644
index 00000000..8a544fec
--- /dev/null
+++ b/mysql-test/main/empty_user_table.test
@@ -0,0 +1,36 @@
+#
+# MDEV-4462 mysqld gets SIGFPE when mysql.user table is empty
+#
+
+source include/not_embedded.inc;
+
+create table t1 as select * from mysql.global_priv;
+truncate table mysql.global_priv;
+flush privileges;
+
+# connecting via unix socket gives ER_ACCESS_DENIED_ERROR
+# connecting via tcp/ip gives ER_HOST_NOT_PRIVILEGED
+--replace_result $MASTER_MYSOCK MASTER_SOCKET $MASTER_MYPORT MASTER_PORT
+--error ER_ACCESS_DENIED_ERROR,ER_HOST_NOT_PRIVILEGED
+connect (fail,localhost,u1);
+
+insert mysql.global_priv select * from t1;
+drop table t1;
+flush privileges;
+
+#
+# same with mysql.user
+#
+
+source include/switch_to_mysql_user.inc;
+truncate table mysql.user;
+
+flush privileges;
+
+# connecting via unix socket gives ER_ACCESS_DENIED_ERROR
+# connecting via tcp/ip gives ER_HOST_NOT_PRIVILEGED
+--replace_result $MASTER_MYSOCK MASTER_SOCKET $MASTER_MYPORT MASTER_PORT
+--error ER_ACCESS_DENIED_ERROR,ER_HOST_NOT_PRIVILEGED
+connect (fail,localhost,u1);
+
+source include/switch_to_mysql_global_priv.inc;