MDEV-2287: Create user fails with non-descriptive error messagest-10.2-anel-MDEV-22874bb-10.2-anel-MDEV-22874

14 files changed, 59 insertions, 46 deletions

diff --git a/mysql-test/r/create_drop_role.result b/mysql-test/r/create_drop_role.result
index 886dcfd0e72..ff367eef49d 100644
--- a/mysql-test/r/create_drop_role.result
+++ b/mysql-test/r/create_drop_role.result
@@ -38,7 +38,7 @@ CREATE OR REPLACE ROLE role_1;
 CREATE OR REPLACE ROLE IF NOT EXISTS role_1;
 ERROR HY000: Incorrect usage of OR REPLACE and IF NOT EXISTS
 CREATE ROLE role_1;
-ERROR HY000: Operation CREATE ROLE failed for 'role_1'
+ERROR HY000: Operation CREATE ROLE failed for 'role_1',role already exists
 CREATE USER u1@localhost;
 REVOKE SHOW DATABASES ON *.* FROM 'u1'@'localhost';
 GRANT SHOW DATABASES ON *.* TO role_1;
diff --git a/mysql-test/r/create_drop_user.result b/mysql-test/r/create_drop_user.result
index dd75d1c257a..bfbf588f11f 100644
--- a/mysql-test/r/create_drop_user.result
+++ b/mysql-test/r/create_drop_user.result
@@ -25,13 +25,13 @@ DROP USER u1@localhost;
 ERROR HY000: Operation DROP USER failed for 'u1'@'localhost'
 CREATE OR REPLACE USER u1@localhost;
 CREATE USER u1@localhost;
-ERROR HY000: Operation CREATE USER failed for 'u1'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'u1'@'localhost',user already exists
 DROP USER u1@localhost;
 CREATE USER u1;
 CREATE USER u1, u2;
-ERROR HY000: Operation CREATE USER failed for 'u1'@'%'
+ERROR HY000: Operation CREATE USER failed for 'u1'@'%',user already exists
 CREATE USER u2;
-ERROR HY000: Operation CREATE USER failed for 'u2'@'%'
+ERROR HY000: Operation CREATE USER failed for 'u2'@'%',user already exists
 CREATE OR REPLACE USER u1 IDENTIFIED BY PASSWORD 'password', u2;
 ERROR HY000: Password hash should be a 41-digit hexadecimal number
 CREATE OR REPLACE USER u1 IDENTIFIED BY PASSWORD 'abcdefghijklmnop', u2;
diff --git a/mysql-test/r/grant.result b/mysql-test/r/grant.result
index bd24c5bf380..d36f4b582ea 100644
--- a/mysql-test/r/grant.result
+++ b/mysql-test/r/grant.result
@@ -844,11 +844,11 @@ flush privileges;
 create user mysqltest_8@'';
 create user mysqltest_8@host8;
 create user mysqltest_8@'';
-ERROR HY000: Operation CREATE USER failed for 'mysqltest_8'@'%'
+ERROR HY000: Operation CREATE USER failed for 'mysqltest_8'@'%',user already exists
 create user mysqltest_8;
-ERROR HY000: Operation CREATE USER failed for 'mysqltest_8'@'%'
+ERROR HY000: Operation CREATE USER failed for 'mysqltest_8'@'%',user already exists
 create user mysqltest_8@host8;
-ERROR HY000: Operation CREATE USER failed for 'mysqltest_8'@'host8'
+ERROR HY000: Operation CREATE USER failed for 'mysqltest_8'@'host8',user already exists
 select user, QUOTE(host) from mysql.user where user="mysqltest_8";
 user	QUOTE(host)
 mysqltest_8	'%'
diff --git a/mysql-test/r/grant2.result b/mysql-test/r/grant2.result
index ffb41c1b5f8..6307801ac4d 100644
--- a/mysql-test/r/grant2.result
+++ b/mysql-test/r/grant2.result
@@ -174,7 +174,7 @@ create table t1(c1 int);
 create table t2(c1 int, c2 int);
 create user 'mysqltest_1';
 create user 'mysqltest_1';
-ERROR HY000: Operation CREATE USER failed for 'mysqltest_1'@'%'
+ERROR HY000: Operation CREATE USER failed for 'mysqltest_1'@'%',user already exists
 create user 'mysqltest_2' identified by 'Mysqltest-2';
 create user 'mysqltest_3' identified by password 'fffffffffffffffffffffffffffffffffffffffff';
 grant select on *.* to 'mysqltest_2';
@@ -279,7 +279,7 @@ ERROR HY000: Operation DROP USER failed for 'mysqltest_1'@'%','mysqltest_2'@'%',
 drop user 'mysqltest_1a', 'mysqltest_2a', 'mysqltest_3a';
 create user 'mysqltest_1', 'mysqltest_2', 'mysqltest_3';
 create user 'mysqltest_1a', 'mysqltest_2', 'mysqltest_3a';
-ERROR HY000: Operation CREATE USER failed for 'mysqltest_2'@'%'
+ERROR HY000: Operation CREATE USER failed for 'mysqltest_2'@'%',user already exists
 rename user 'mysqltest_1a' to 'mysqltest_1b', 'mysqltest_2a' TO 'mysqltest_2b', 'mysqltest_3a' TO 'mysqltest_3b';
 ERROR HY000: Operation RENAME USER failed for 'mysqltest_2a'@'%'
 drop user 'mysqltest_1', 'mysqltest_2', 'mysqltest_3';
diff --git a/mysql-test/r/not_embedded_server.result b/mysql-test/r/not_embedded_server.result
index ba68ca8619b..7c9126a5bcc 100644
--- a/mysql-test/r/not_embedded_server.result
+++ b/mysql-test/r/not_embedded_server.result
@@ -60,39 +60,39 @@ SET @@sql_mode='';
 # USER NAME CONTAINING BACKSLASH IN CREATE USER OPERATION
 CREATE USER 'user\'s_12601974'@'localhost';
 CREATE USER 'user\'s_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\'s_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\'s_12601974'@'localhost',user already exists
 DROP USER 'user\'s_12601974'@'localhost';
 CREATE USER 'user\"s_12601974'@'localhost';
 CREATE USER 'user\"s_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\"s_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\"s_12601974'@'localhost',user already exists
 DROP USER 'user\"s_12601974'@'localhost';
 CREATE USER 'user\bs_12601974'@'localhost';
 CREATE USER 'user\bs_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'users_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'users_12601974'@'localhost',user already exists
 DROP USER 'user\bs_12601974'@'localhost';
 CREATE USER 'user\ns_12601974'@'localhost';
 CREATE USER 'user\ns_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\ns_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\ns_12601974'@'localhost',user already exists
 DROP USER 'user\ns_12601974'@'localhost';
 CREATE USER 'user\rs_12601974'@'localhost';
 CREATE USER 'user\rs_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\rs_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\rs_12601974'@'localhost',user already exists
 DROP USER 'user\rs_12601974'@'localhost';
 CREATE USER 'user\ts_12601974'@'localhost';
 CREATE USER 'user\ts_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user	s_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user	s_12601974'@'localhost',user already exists
 DROP USER 'user\ts_12601974'@'localhost';
 CREATE USER 'user\\s_12601974'@'localhost';
 CREATE USER 'user\\s_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\\s_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\\s_12601974'@'localhost',user already exists
 DROP USER 'user\\s_12601974'@'localhost';
 CREATE USER 'user\%s_12601974'@'localhost';
 CREATE USER 'user\%s_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\\%s_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\\%s_12601974'@'localhost',user already exists
 DROP USER 'user\%s_12601974'@'localhost';
 CREATE USER 'user\_s_12601974'@'localhost';
 CREATE USER 'user\_s_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\\_s_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\\_s_12601974'@'localhost',user already exists
 DROP USER 'user\_s_12601974'@'localhost';
 
 # END OF CASE - USER NAME CONTAINING BACKSLASH IN CREATE USER OPERATION
@@ -100,35 +100,35 @@ SET @@sql_mode='NO_BACKSLASH_ESCAPES';
 # USER NAME CONTAINING BACKSLASH IN DROP USER OPERATION
 CREATE USER 'user\"s_12601974'@'localhost';
 CREATE USER 'user\"s_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\"s_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\"s_12601974'@'localhost',user already exists
 DROP USER 'user\"s_12601974'@'localhost';
 CREATE USER 'user\bs_12601974'@'localhost';
 CREATE USER 'user\bs_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\bs_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\bs_12601974'@'localhost',user already exists
 DROP USER 'user\bs_12601974'@'localhost';
 CREATE USER 'user\ns_12601974'@'localhost';
 CREATE USER 'user\ns_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\ns_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\ns_12601974'@'localhost',user already exists
 DROP USER 'user\ns_12601974'@'localhost';
 CREATE USER 'user\rs_12601974'@'localhost';
 CREATE USER 'user\rs_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\rs_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\rs_12601974'@'localhost',user already exists
 DROP USER 'user\rs_12601974'@'localhost';
 CREATE USER 'user\ts_12601974'@'localhost';
 CREATE USER 'user\ts_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\ts_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\ts_12601974'@'localhost',user already exists
 DROP USER 'user\ts_12601974'@'localhost';
 CREATE USER 'user\\s_12601974'@'localhost';
 CREATE USER 'user\\s_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\\s_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\\s_12601974'@'localhost',user already exists
 DROP USER 'user\\s_12601974'@'localhost';
 CREATE USER 'user\%s_12601974'@'localhost';
 CREATE USER 'user\%s_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\%s_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\%s_12601974'@'localhost',user already exists
 DROP USER 'user\%s_12601974'@'localhost';
 CREATE USER 'user\_s_12601974'@'localhost';
 CREATE USER 'user\_s_12601974'@'localhost';
-ERROR HY000: Operation CREATE USER failed for 'user\_s_12601974'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'user\_s_12601974'@'localhost',user already exists
 DROP USER 'user\_s_12601974'@'localhost';
 
 # END OF CASE - USER NAME CONTAINING BACKSLASH IN CREATE USER OPERATION
diff --git a/mysql-test/r/plugin_auth_qa.result b/mysql-test/r/plugin_auth_qa.result
index 4f274c45971..9f12679b44c 100644
--- a/mysql-test/r/plugin_auth_qa.result
+++ b/mysql-test/r/plugin_auth_qa.result
@@ -164,9 +164,9 @@ GRANT ALL PRIVILEGES ON test_user_db.* TO plug IDENTIFIED WITH 'test_plugin_serv
 DROP USER plug;
 GRANT ALL PRIVILEGES ON test_user_db.* TO plug IDENTIFIED WITH test_plugin_server AS 'plug_dest';
 CREATE USER plug IDENTIFIED WITH 'test_plugin_server' AS 'plug_dest';
-ERROR HY000: Operation CREATE USER failed for 'plug'@'%'
+ERROR HY000: Operation CREATE USER failed for 'plug'@'%',user already exists
 CREATE USER plug IDENTIFIED WITH 'test_plugin_server';
-ERROR HY000: Operation CREATE USER failed for 'plug'@'%'
+ERROR HY000: Operation CREATE USER failed for 'plug'@'%',user already exists
 DROP USER plug;
 CREATE USER plug IDENTIFIED WITH 'test_plugin_server' AS 'plug_dest';
 SELECT user,plugin,authentication_string,password FROM mysql.user WHERE user != 'root';
@@ -179,7 +179,7 @@ plug			*939AEE68989794C0F408277411C26055CDF41119
 DROP USER plug;
 GRANT ALL PRIVILEGES ON test_user_db.* TO plug IDENTIFIED WITH test_plugin_server AS 'plug_dest';
 CREATE USER plug IDENTIFIED BY 'plug_dest_passwd';
-ERROR HY000: Operation CREATE USER failed for 'plug'@'%'
+ERROR HY000: Operation CREATE USER failed for 'plug'@'%',user already exists
 DROP USER plug;
 CREATE USER plug IDENTIFIED WITH 'test_plugin_server' AS 'plug_dest';
 CREATE USER plug_dest IDENTIFIED WITH 'test_plugin_server' AS 'plug_dest';
diff --git a/mysql-test/r/ps.result b/mysql-test/r/ps.result
index f1f779ef03f..5c03556826b 100644
--- a/mysql-test/r/ps.result
+++ b/mysql-test/r/ps.result
@@ -2673,7 +2673,7 @@ call proc_1();
 drop user pstest_xyz@localhost;
 call proc_1();
 call proc_1();
-ERROR HY000: Operation CREATE USER failed for 'pstest_xyz'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'pstest_xyz'@'localhost',user already exists
 drop user pstest_xyz@localhost;
 call proc_1();
 drop user pstest_xyz@localhost;
@@ -2689,7 +2689,7 @@ execute abc;
 drop user pstest_xyz@localhost;
 execute abc;
 execute abc;
-ERROR HY000: Operation CREATE USER failed for 'pstest_xyz'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'pstest_xyz'@'localhost',user already exists
 drop user pstest_xyz@localhost;
 execute abc;
 drop user pstest_xyz@localhost;
diff --git a/mysql-test/suite/roles/create_and_drop_current.result b/mysql-test/suite/roles/create_and_drop_current.result
index 7e847677364..0c770ca70c1 100644
--- a/mysql-test/suite/roles/create_and_drop_current.result
+++ b/mysql-test/suite/roles/create_and_drop_current.result
@@ -1,13 +1,13 @@
 create user foo@localhost;
 grant create user on *.* to foo@localhost;
 create user current_user;
-ERROR HY000: Operation CREATE USER failed for CURRENT_USER
+ERROR HY000: Operation CREATE USER failed for CURRENT_USER,user already exists
 create user current_role;
-ERROR HY000: Operation CREATE USER failed for CURRENT_ROLE
+ERROR HY000: Operation CREATE USER failed for CURRENT_ROLE,user already exists
 create role current_user;
 ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'current_user' at line 1
 create role current_role;
-ERROR HY000: Operation CREATE ROLE failed for CURRENT_ROLE
+ERROR HY000: Operation CREATE ROLE failed for CURRENT_ROLE,role already exists
 drop user current_user;
 drop user current_role;
 ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'current_role' at line 1
@@ -26,9 +26,9 @@ select current_role();
 current_role()
 r1
 create user current_role;
-ERROR HY000: Operation CREATE USER failed for CURRENT_ROLE
+ERROR HY000: Operation CREATE USER failed for CURRENT_ROLE,user already exists
 create role current_role;
-ERROR HY000: Operation CREATE ROLE failed for CURRENT_ROLE
+ERROR HY000: Operation CREATE ROLE failed for CURRENT_ROLE,role already exists
 drop user current_role;
 ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'current_role' at line 1
 drop role current_role;
diff --git a/mysql-test/suite/roles/create_and_drop_role.result b/mysql-test/suite/roles/create_and_drop_role.result
index b13f6eb4cb8..2ab418ef14b 100644
--- a/mysql-test/suite/roles/create_and_drop_role.result
+++ b/mysql-test/suite/roles/create_and_drop_role.result
@@ -15,9 +15,9 @@ drop role test_role1;
 drop role test_role2, test_role3;
 create role test_role1;
 create role test_role1;
-ERROR HY000: Operation CREATE ROLE failed for 'test_role1'
+ERROR HY000: Operation CREATE ROLE failed for 'test_role1',role already exists
 create role test_role1, test_role2;
-ERROR HY000: Operation CREATE ROLE failed for 'test_role1'
+ERROR HY000: Operation CREATE ROLE failed for 'test_role1',role already exists
 select user, host, is_role from user where user like 'test%';
 user	host	is_role
 test_role1		Y
diff --git a/mysql-test/suite/roles/prepare_stmt_with_role.result b/mysql-test/suite/roles/prepare_stmt_with_role.result
index b2af23c8fbb..073d4363990 100644
--- a/mysql-test/suite/roles/prepare_stmt_with_role.result
+++ b/mysql-test/suite/roles/prepare_stmt_with_role.result
@@ -22,7 +22,7 @@ GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION
 GRANT PROXY ON ''@'%' TO 'root'@'localhost' WITH GRANT OPTION
 # Test reexecution.
 EXECUTE stmtCreateRole;
-ERROR HY000: Operation CREATE ROLE failed for 'developers'
+ERROR HY000: Operation CREATE ROLE failed for 'developers',role already exists
 #
 # Now grant the role to the test user.
 #
diff --git a/mysql-test/suite/rpl/r/rpl_create_drop_role.result b/mysql-test/suite/rpl/r/rpl_create_drop_role.result
index 7a733614012..b20387369ce 100644
--- a/mysql-test/suite/rpl/r/rpl_create_drop_role.result
+++ b/mysql-test/suite/rpl/r/rpl_create_drop_role.result
@@ -29,7 +29,7 @@ role_2
 role_3
 connection master;
 CREATE ROLE role_2;
-ERROR HY000: Operation CREATE ROLE failed for 'role_2'
+ERROR HY000: Operation CREATE ROLE failed for 'role_2',role already exists
 connection slave;
 SELECT User FROM mysql.user WHERE is_role='Y' ORDER BY User;
 User
diff --git a/mysql-test/suite/rpl/r/rpl_create_drop_user.result b/mysql-test/suite/rpl/r/rpl_create_drop_user.result
index f8cc271e8cf..ab8ed10c115 100644
--- a/mysql-test/suite/rpl/r/rpl_create_drop_user.result
+++ b/mysql-test/suite/rpl/r/rpl_create_drop_user.result
@@ -46,7 +46,7 @@ u1	*A9A5EF53CE2EFAA6F4A746D63A917B2370971A7E
 u2	
 connection master;
 CREATE USER u1@localhost;
-ERROR HY000: Operation CREATE USER failed for 'u1'@'localhost'
+ERROR HY000: Operation CREATE USER failed for 'u1'@'localhost',user already exists
 DROP USER u3@localhost;
 ERROR HY000: Operation DROP USER failed for 'u3'@'localhost'
 connection slave;
diff --git a/mysql-test/suite/rpl/r/rpl_user.result b/mysql-test/suite/rpl/r/rpl_user.result
index 2a8bf69501c..488d93fdc6e 100644
--- a/mysql-test/suite/rpl/r/rpl_user.result
+++ b/mysql-test/suite/rpl/r/rpl_user.result
@@ -11,9 +11,9 @@ set session sql_log_bin=1;
 connection master;
 create user 'foo'@'fakehost';
 create user 'foo'@'fakehost', 'bar'@'fakehost';
-ERROR HY000: Operation CREATE USER failed for 'foo'@'fakehost'
+ERROR HY000: Operation CREATE USER failed for 'foo'@'fakehost',user already exists
 create user 'foo'@'fakehost', 'bar'@'fakehost';
-ERROR HY000: Operation CREATE USER failed for 'foo'@'fakehost','bar'@'fakehost'
+ERROR HY000: Operation CREATE USER failed for 'foo'@'fakehost','bar'@'fakehost',user already exists
 connection slave;
 select Host,User from mysql.user where Host='fakehost';
 Host	User
diff --git a/sql/sql_acl.cc b/sql/sql_acl.cc
index 89fecc92e9b..c7966c0caa9 100644
--- a/sql/sql_acl.cc
+++ b/sql/sql_acl.cc
@@ -10353,6 +10353,9 @@ bool mysql_create_user(THD *thd, List <LEX_USER> &list, bool handle_as_role)
 
   if (result)
   {
+    const char *c= (handle_as_role) ? "role already exists" : \
+                                      "user already exists";
+    append_str(&wrong_users, c, strlen(c));
     my_error(ER_CANNOT_USER, MYF(0),
              (handle_as_role) ? "CREATE ROLE" : "CREATE USER",
              wrong_users.c_ptr_safe());
@@ -10463,10 +10466,14 @@ bool mysql_drop_user(THD *thd, List <LEX_USER> &list, bool handle_as_role)
 
   mysql_mutex_unlock(&acl_cache->lock);
 
-  if (result)
+  if (result){
+    const char *c= (handle_as_role) ? "role doesn't exist" : \
+                                  "user doesn't exist";
+    append_str(&wrong_users, c, strlen(c));
     my_error(ER_CANNOT_USER, MYF(0),
              (handle_as_role) ? "DROP ROLE" : "DROP USER",
              wrong_users.c_ptr_safe());
+  }
 
   if (binlog)
     result |= write_bin_log(thd, FALSE, thd->query(), thd->query_length());
@@ -10556,9 +10563,11 @@ bool mysql_rename_user(THD *thd, List <LEX_USER> &list)
 
   mysql_mutex_unlock(&acl_cache->lock);
 
-  if (result)
+  if (result){
+    const char *c= "user doesn't exist";
+    append_str(&wrong_users, c, strlen(c));
     my_error(ER_CANNOT_USER, MYF(0), "RENAME USER", wrong_users.c_ptr_safe());
-
+  }
   if (some_users_renamed && mysql_bin_log.is_open())
     result |= write_bin_log(thd, FALSE, thd->query(), thd->query_length());
 
@@ -10621,6 +10630,8 @@ int mysql_alter_user(THD* thd, List<LEX_USER> &users_list)
     /* 'if exists' flag leads to warnings instead of errors. */
     if (thd->lex->create_info.if_exists())
     {
+      const char *c= "user doesn't exist";
+      append_str(&wrong_users, c, strlen(c));
       push_warning_printf(thd, Sql_condition::WARN_LEVEL_NOTE,
                           ER_CANNOT_USER,
                           ER_THD(thd, ER_CANNOT_USER),
@@ -10629,6 +10640,8 @@ int mysql_alter_user(THD* thd, List<LEX_USER> &users_list)
     }
     else
     {
+      const char *c= "user doesn't exist";
+      append_str(&wrong_users, c, strlen(c));
       my_error(ER_CANNOT_USER, MYF(0),
                "ALTER USER",
                wrong_users.c_ptr_safe());