Merge bk-internal:/home/bk/mysql-5.0-maint

into  neptunus.(none):/home/msvensson/mysql/mysql-5.0-maint


sql/set_var.cc:
  Auto merged

BitKeeper/etc/collapsed

@@ -7,3 +7,5 @@
 4513d8e4Af4dQWuk13sArwofRgFDQw
 4519a6c5BVUxEHTf5iJnjZkixMBs8g
 451ab499rgdjXyOnUDqHu-wBDoS-OQ
+45214442pBGT9KuZEGixBH71jTzbOA
+45214a07hVsIGwvwa-WrO-jpeaSwVw

client/mysqldump.c

@@ -3104,7 +3104,7 @@ static int do_reset_master(MYSQL *mysql_con)
 }
 
 
-static int start_transaction(MYSQL *mysql_con, my_bool consistent_read_now)
+static int start_transaction(MYSQL *mysql_con)
 {
   /*
     We use BEGIN for old servers. --single-transaction --master-data will fail
@@ -3119,10 +3119,8 @@ static int start_transaction(MYSQL *mysql_con, my_bool consistent_read_now)
                                         "SET SESSION TRANSACTION ISOLATION "
                                         "LEVEL REPEATABLE READ") ||
           mysql_query_with_error_report(mysql_con, 0,
-                                        consistent_read_now ?
                                         "START TRANSACTION "
-                                        "WITH CONSISTENT SNAPSHOT" :
-                                        "BEGIN"));
+                                        "/*!40100 WITH CONSISTENT SNAPSHOT */"));
 }
 
 
@@ -3612,7 +3610,7 @@ int main(int argc, char **argv)
   if ((opt_lock_all_tables || opt_master_data) &&
       do_flush_tables_read_lock(mysql))
     goto err;
-  if (opt_single_transaction && start_transaction(mysql, test(opt_master_data)))
+  if (opt_single_transaction && start_transaction(mysql))
       goto err;
   if (opt_delete_master_logs && do_reset_master(mysql))
     goto err;

mysql-test/r/ps_11bugs.result

@@ -130,3 +130,36 @@ prepare st_18492 from 'select * from t1 where 3 in (select (1+1) union select 1)
 execute st_18492;
 a
 drop table t1;
+create table t1 (a int, b varchar(4));
+create table t2 (a int, b varchar(4), primary key(a));
+prepare stmt1 from 'insert into t1 (a, b) values (?, ?)';
+prepare stmt2 from 'insert into t2 (a, b) values (?, ?)';
+set @intarg= 11;
+set @varchararg= '2222';
+execute stmt1 using @intarg, @varchararg;
+execute stmt2 using @intarg, @varchararg;
+set @intarg= 12;
+execute stmt1 using @intarg, @UNDEFINED;
+execute stmt2 using @intarg, @UNDEFINED;
+set @intarg= 13;
+execute stmt1 using @UNDEFINED, @varchararg;
+execute stmt2 using @UNDEFINED, @varchararg;
+ERROR 23000: Column 'a' cannot be null
+set @intarg= 14;
+set @nullarg= Null;
+execute stmt1 using @UNDEFINED, @nullarg;
+execute stmt2 using @nullarg, @varchararg;
+ERROR 23000: Column 'a' cannot be null
+select * from t1;
+a	b
+11	2222
+12	NULL
+NULL	2222
+NULL	NULL
+select * from t2;
+a	b
+11	2222
+12	NULL
+drop table t1;
+drop table t2;
+End of 5.0 tests.

mysql-test/r/user_var.result

@@ -215,6 +215,7 @@ select @@version;
 select @@global.version;
 @@global.version
 #
+End of 4.1 tests
 set @first_var= NULL;
 create table t1 select @first_var;
 show create table t1;
@@ -301,3 +302,11 @@ select @var;
 @var
 3
 drop table t1;
+insert into city 'blah';
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''blah'' at line 1
+SHOW COUNT(*) WARNINGS;
+@@session.warning_count
+1
+SHOW COUNT(*) ERRORS;
+@@session.error_count
+1

mysql-test/t/ps_11bugs.test

@@ -144,3 +144,37 @@ prepare st_18492 from 'select * from t1 where 3 in (select (1+1) union select 1)
 execute st_18492;
 
 drop table t1;
+
+#
+# Bug#19356: Assertion failure with undefined @uservar in prepared statement execution
+# 
+create table t1 (a int, b varchar(4));
+create table t2 (a int, b varchar(4), primary key(a));
+
+prepare stmt1 from 'insert into t1 (a, b) values (?, ?)';
+prepare stmt2 from 'insert into t2 (a, b) values (?, ?)';
+
+set @intarg= 11;
+set @varchararg= '2222';
+execute stmt1 using @intarg, @varchararg;
+execute stmt2 using @intarg, @varchararg;
+set @intarg= 12;
+execute stmt1 using @intarg, @UNDEFINED;
+execute stmt2 using @intarg, @UNDEFINED;
+set @intarg= 13;
+execute stmt1 using @UNDEFINED, @varchararg;
+--error 1048
+execute stmt2 using @UNDEFINED, @varchararg;
+set @intarg= 14;
+set @nullarg= Null;
+execute stmt1 using @UNDEFINED, @nullarg;
+--error 1048
+execute stmt2 using @nullarg, @varchararg;
+
+select * from t1;
+select * from t2;
+
+drop table t1;
+drop table t2;
+
+--echo End of 5.0 tests.

mysql-test/t/user_var.test

@@ -144,6 +144,8 @@ select @@version;
 --replace_column 1 #
 select @@global.version;
 
+--echo End of 4.1 tests
+
 # Bug #6598: problem with cast(NULL as signed integer);
 #
 
@@ -210,4 +212,10 @@ select @var:=f2 from t1 group by f1 order by f2 desc limit 1;
 select @var;
 drop table t1;
 
-# End of 4.1 tests
+#
+# Bug#19024 - SHOW COUNT(*) WARNINGS not return Errors 
+#
+--error 1064
+insert into city 'blah';
+SHOW COUNT(*) WARNINGS;
+SHOW COUNT(*) ERRORS;

sql/set_var.cc

@@ -2927,6 +2927,7 @@ static byte *get_warning_count(THD *thd)
 {
   thd->sys_var_tmp.long_value=
     (thd->warn_count[(uint) MYSQL_ERROR::WARN_LEVEL_NOTE] +
+     thd->warn_count[(uint) MYSQL_ERROR::WARN_LEVEL_ERROR] +
      thd->warn_count[(uint) MYSQL_ERROR::WARN_LEVEL_WARN]);
   return (byte*) &thd->sys_var_tmp.long_value;
 }

sql/sql_prepare.cc

@@ -2248,6 +2248,14 @@ void mysql_stmt_execute(THD *thd, char *packet_arg, uint packet_length)
 #endif
   if (!(specialflag & SPECIAL_NO_PRIOR))
     my_pthread_setprio(pthread_self(),QUERY_PRIOR);
+
+  /*
+    If the free_list is not empty, we'll wrongly free some externally
+    allocated items when cleaning up after validation of the prepared
+    statement.
+  */
+  DBUG_ASSERT(thd->free_list == NULL);
+
   error= stmt->execute(&expanded_query,
                        test(flags & (ulong) CURSOR_TYPE_READ_ONLY));
   if (!(specialflag & SPECIAL_NO_PRIOR))
@@ -2310,6 +2318,13 @@ void mysql_sql_stmt_execute(THD *thd)
 
   DBUG_PRINT("info",("stmt: %p", stmt));
 
+  /*
+    If the free_list is not empty, we'll wrongly free some externally
+    allocated items when cleaning up after validation of the prepared
+    statement.
+  */
+  DBUG_ASSERT(thd->free_list == NULL);
+
   if (stmt->set_params_from_vars(stmt, lex->prepared_stmt_params,
                                  &expanded_query))
     goto set_params_data_err;
@@ -2788,12 +2803,12 @@ bool Prepared_statement::prepare(const char *packet, uint packet_len)
     external changes when cleaning up after validation.
   */
   DBUG_ASSERT(thd->change_list.is_empty());
-  /*
-    If the free_list is not empty, we'll wrongly free some externally
-    allocated items when cleaning up after validation of the prepared
-    statement.
+
+  /* 
+   The only case where we should have items in the thd->free_list is
+   after stmt->set_params_from_vars(), which may in some cases create
+   Item_null objects.
   */
-  DBUG_ASSERT(thd->free_list == NULL);
 
   if (error == 0)
     error= check_prepared_statement(this, name.str != 0);
@@ -2891,7 +2906,13 @@ bool Prepared_statement::execute(String *expanded_query, bool open_cursor)
     allocated items when cleaning up after execution of this statement.
   */
   DBUG_ASSERT(thd->change_list.is_empty());
-  DBUG_ASSERT(thd->free_list == NULL);
+
+  /* 
+   The only case where we should have items in the thd->free_list is
+   after stmt->set_params_from_vars(), which may in some cases create
+   Item_null objects.
+  */
+
   thd->set_n_backup_statement(this, &stmt_backup);
   if (expanded_query->length() &&
       alloc_query(thd, (char*) expanded_query->ptr(),