Fixed problems found by valgrind

Fixed problems in test suite where some test failed
Fixed access to not initialized memory in federated
Fixed access to not initialized memory when using BIT fields in internal temporary tables

.bzrignore

@@ -1125,3 +1125,5 @@ vio/test-ssl
 vio/test-sslclient
 vio/test-sslserver
 vio/viotest-ssl
+libmysqld/sql_cursor.cc
+libmysqld/sql_cursor.h

mysql-test/r/information_schema.result

-DROP TABLE IF EXISTS t0,t1,t2,t3,t5;
+DROP TABLE IF EXISTS t0,t1,t2,t3,t4,t5;
+DROP VIEW IF EXISTS v1;
 show variables where variable_name like "skip_show_database";
 Variable_name	Value
 skip_show_database	OFF
@@ -638,8 +639,8 @@ use test;
 create function sub1(i int) returns int
 return i+1;
 create table t1(f1 int);
-create view t2 (c) as select f1 from t1;
-create view t3 (c) as select sub1(1);
+create view v2 (c) as select f1 from t1;
+create view v3 (c) as select sub1(1);
 create table t4(f1 int, KEY f1_key (f1));
 drop table t1;
 drop function sub1;
@@ -647,29 +648,29 @@ select table_name from information_schema.views
 where table_schema='test';
 table_name
 Warnings:
-Warning	1356	View 'test.t2' references invalid table(s) or column(s) or function(s)
-Warning	1356	View 'test.t3' references invalid table(s) or column(s) or function(s)
+Warning	1356	View 'test.v2' references invalid table(s) or column(s) or function(s)
+Warning	1356	View 'test.v3' references invalid table(s) or column(s) or function(s)
 select table_name from information_schema.views
 where table_schema='test';
 table_name
 Warnings:
-Warning	1356	View 'test.t2' references invalid table(s) or column(s) or function(s)
-Warning	1356	View 'test.t3' references invalid table(s) or column(s) or function(s)
+Warning	1356	View 'test.v2' references invalid table(s) or column(s) or function(s)
+Warning	1356	View 'test.v3' references invalid table(s) or column(s) or function(s)
 select column_name from information_schema.columns
 where table_schema='test';
 column_name
 f1
 Warnings:
-Warning	1356	View 'test.t2' references invalid table(s) or column(s) or function(s)
-Warning	1356	View 'test.t3' references invalid table(s) or column(s) or function(s)
+Warning	1356	View 'test.v2' references invalid table(s) or column(s) or function(s)
+Warning	1356	View 'test.v3' references invalid table(s) or column(s) or function(s)
 select index_name from information_schema.statistics where table_schema='test';
 index_name
 f1_key
 select constraint_name from information_schema.table_constraints
 where table_schema='test';
 constraint_name
-drop view t2;
-drop view t3;
+drop view v2;
+drop view v3;
 drop table t4;
 select * from information_schema.table_names;
 ERROR 42S02: Unknown table 'table_names' in information_schema

mysql-test/r/information_schema_inno.result

-DROP TABLE IF EXISTS t1,t2;
+DROP TABLE IF EXISTS t1,t2,t3;
 CREATE TABLE t1 (id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB;
 CREATE TABLE t2 (id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id, id),
 FOREIGN KEY (t1_id) REFERENCES t1(id)  ON DELETE CASCADE,

mysql-test/r/multi_statement.result

+DROP TABLE IF EXISTS t1;
 select 1;
 1
 1

mysql-test/r/temp_table.result

 drop table if exists t1,t2;
+drop view if exists v1;
 CREATE TABLE t1 (c int not null, d char (10) not null);
 insert into t1 values(1,""),(2,"a"),(3,"b");
 CREATE TEMPORARY TABLE t1 (a int not null, b char (10) not null);
@@ -99,32 +100,32 @@ Variable_name	Value
 Created_tmp_disk_tables	0
 Created_tmp_tables	2
 drop table t1;
-create temporary table t1 as select 'This is temp. table' A;
-create view t1 as select 'This is view' A;
-select * from t1;
+create temporary table v1 as select 'This is temp. table' A;
+create view v1 as select 'This is view' A;
+select * from v1;
 A
 This is temp. table
-show create table t1;
+show create table v1;
 Table	Create Table
-t1	CREATE TEMPORARY TABLE `t1` (
+v1	CREATE TEMPORARY TABLE `v1` (
   `A` varchar(19) NOT NULL default ''
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
-show create view t1;
+show create view v1;
 View	Create View
-t1	CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `t1` AS select _latin1'This is view' AS `A`
-drop view t1;
-select * from t1;
+v1	CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select _latin1'This is view' AS `A`
+drop view v1;
+select * from v1;
 A
 This is temp. table
-create view t1 as select 'This is view again' A;
-select * from t1;
+create view v1 as select 'This is view again' A;
+select * from v1;
 A
 This is temp. table
-drop table t1;
-select * from t1;
+drop table v1;
+select * from v1;
 A
 This is view again
-drop view t1;
+drop view v1;
 create table t1 (a int, b int, index(a), index(b));
 create table t2 (c int auto_increment, d varchar(255), primary key (c));
 insert into t1 values (3,1),(3,2);

mysql-test/r/type_bit.result

@@ -553,3 +553,13 @@ sum(a1)	b1+0	b2+0
 2	0	0
 4	2	2
 8	1	1
+select 1 from t1 join t2 on b1 = b2 group by b1 order by 1;
+1
+1
+1
+1
+select b1+0,sum(b1), sum(b2) from t1 join t2 on b1 = b2 group by b1 order by 1;
+b1+0	sum(b1)	sum(b2)
+0	0	0
+1	4	4
+2	2	2

mysql-test/t/information_schema.test

@@ -5,7 +5,8 @@
 # show databases
 
 --disable_warnings
-DROP TABLE IF EXISTS t0,t1,t2,t3,t5;
+DROP TABLE IF EXISTS t0,t1,t2,t3,t4,t5;
+DROP VIEW IF EXISTS v1;
 --enable_warnings
 
 
@@ -364,8 +365,8 @@ use test;
 create function sub1(i int) returns int
   return i+1;
 create table t1(f1 int);
-create view t2 (c) as select f1 from t1;
-create view t3 (c) as select sub1(1);
+create view v2 (c) as select f1 from t1;
+create view v3 (c) as select sub1(1);
 create table t4(f1 int, KEY f1_key (f1));
 drop table t1;
 drop function sub1;
@@ -378,8 +379,8 @@ where table_schema='test';
 select index_name from information_schema.statistics where table_schema='test';
 select constraint_name from information_schema.table_constraints
 where table_schema='test';
-drop view t2;
-drop view t3;
+drop view v2;
+drop view v3;
 drop table t4;
 
 #

mysql-test/t/information_schema_inno.test

 -- source include/have_innodb.inc
 --disable_warnings
-DROP TABLE IF EXISTS t1,t2;
+DROP TABLE IF EXISTS t1,t2,t3;
 --enable_warnings
 
 #

mysql-test/t/multi_statement.test

 # PS doesn't support multi-statements
 --disable_ps_protocol
 
+--disable_warnings
+DROP TABLE IF EXISTS t1;
+--enable_warnings
+
 select 1;
 delimiter ||||;
 select 2;

mysql-test/t/temp_table.test

@@ -4,6 +4,7 @@
 
 --disable_warnings
 drop table if exists t1,t2;
+drop view if exists v1;
 --enable_warnings
 
 CREATE TABLE t1 (c int not null, d char (10) not null);
@@ -91,18 +92,18 @@ show status like "created_tmp%tables";
 drop table t1;
 
 # Fix for BUG#8921: Check that temporary table is ingored by view commands.
-create temporary table t1 as select 'This is temp. table' A;
-create view t1 as select 'This is view' A;
-select * from t1;
-show create table t1;
-show create view t1;
-drop view t1;
-select * from t1;
-create view t1 as select 'This is view again' A;
-select * from t1;
-drop table t1;
-select * from t1;
-drop view t1;
+create temporary table v1 as select 'This is temp. table' A;
+create view v1 as select 'This is view' A;
+select * from v1;
+show create table v1;
+show create view v1;
+drop view v1;
+select * from v1;
+create view v1 as select 'This is view again' A;
+select * from v1;
+drop table v1;
+select * from v1;
+drop view v1;
 
 # Bug #8497: tmpdir with extra slashes would cause failures
 #

mysql-test/t/type_bit.test

@@ -224,3 +224,5 @@ select a1, a2, b1+0, b2+0 from t1 join t2 on a1 = a2;
 select a1, a2, b1+0, b2+0 from t1 join t2 on a1 = a2 order by a1;
 select a1, a2, b1+0, b2+0 from t1 join t2 on b1 = b2;
 select sum(a1), b1+0, b2+0 from t1 join t2 on b1 = b2 group by b1 order by 1;
+select 1 from t1 join t2 on b1 = b2 group by b1 order by 1;
+select b1+0,sum(b1), sum(b2) from t1 join t2 on b1 = b2 group by b1 order by 1;

mysql-test/valgrind.supp

@@ -51,6 +51,16 @@
    fun:pthread_create
 }
 
+{
+   pthread pthread_key_create
+   Memcheck:Leak
+   fun:malloc
+   fun:*
+   fun:*
+   fun:pthread_key_create
+   fun:my_thread_global_init
+}
+
 {
    pthread strstr uninit
    Memcheck:Cond
@@ -127,8 +137,18 @@
 {
    libz deflate
    Memcheck:Cond
-   obj:/usr/lib/libz.so.*
-   obj:/usr/lib/libz.so.*
+   obj:*/libz.so.*
+   obj:*/libz.so.*
    fun:deflate
    fun:compress2
 }
+
+{
+   libz deflate2
+   Memcheck:Cond
+   obj:*/libz.so.*
+   obj:*/libz.so.*
+   fun:deflate
+   obj:*/libz.so.*
+   fun:gzflush
+}

sql/ha_federated.cc

@@ -588,12 +588,14 @@ static int parse_url(FEDERATED_SHARE *share, TABLE *table,
   DBUG_ENTER("ha_federated::parse_url");
 
   share->port= 0;
+  share->socket= 0;
   DBUG_PRINT("info", ("Length %d \n", table->s->connect_string.length));
   DBUG_PRINT("info", ("String %.*s \n", table->s->connect_string.length, 
                       table->s->connect_string.str));
-  share->scheme= my_strdup_with_length(
-    (const byte*)table->s->connect_string.str, 
-    table->s->connect_string.length+1, MYF(0));
+  share->scheme= my_strdup_with_length((const byte*)table->s->
+                                       connect_string.str, 
+                                       table->s->connect_string.length,
+                                       MYF(0));
 
   // Add a null for later termination of table name
   share->scheme[table->s->connect_string.length]= 0;
@@ -1375,13 +1377,9 @@ static int free_share(FEDERATED_SHARE *share)
 
   if (!--share->use_count)
   {
-    if (share->scheme)
-    {
-      my_free((gptr) share->scheme, MYF(0));
-      share->scheme= 0;
-    }
-
     hash_delete(&federated_open_tables, (byte*) share);
+    my_free((gptr) share->scheme, MYF(MY_ALLOW_ZERO_PTR0));
+    share->scheme= 0;
     thr_lock_delete(&share->lock);
     VOID(pthread_mutex_destroy(&share->mutex));
     my_free((gptr) share, MYF(0));

sql/item_func.h

@@ -1286,9 +1286,6 @@ public:
     {
       ft_handler->please->close_search(ft_handler);
       ft_handler=0;
-      if (join_key)
-	table->file->ft_handler=0;
-      table->fulltext_searched=0;
     }
     concat= 0;
     DBUG_VOID_RETURN;

sql/sql_base.cc

@@ -1327,6 +1327,8 @@ TABLE *open_table(THD *thd, TABLE_LIST *table_list, MEM_ROOT *mem_root,
   table->keys_in_use_for_query= table->s->keys_in_use;
   table->insert_values= 0;
   table->used_keys= table->s->keys_for_keyread;
+  table->fulltext_searched= 0;
+  table->file->ft_handler= 0;
   if (table->timestamp_field)
     table->timestamp_field_type= table->timestamp_field->get_auto_set_type();
   table_list->updatable= 1; // It is not derived table nor non-updatable VIEW

sql/sql_select.cc

@@ -7820,15 +7820,21 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
                                          modify_item, convert_blob_length);
       *from_field= field->field;
       if (result && modify_item)
-        ((Item_field*)item)->result_field= result;
+        field->result_field= result;
     } 
-    else if (table_cant_handle_bit_fields && field->field->type() == FIELD_TYPE_BIT)
+    else if (table_cant_handle_bit_fields && field->field->type() ==
+             FIELD_TYPE_BIT)
+    {
+      *from_field= field->field;
       result= create_tmp_field_from_item(thd, item, table, copy_func,
                                         modify_item, convert_blob_length);
+      if (result && modify_item)
+        field->result_field= result;
+    }
     else
       result= create_tmp_field_from_field(thd, (*from_field= field->field),
                                        item->name, table,
-                                       modify_item ? (Item_field*) item :
+                                       modify_item ? field :
                                        NULL,
                                        convert_blob_length);
     if (orig_type == Item::REF_ITEM && orig_modify)
@@ -8071,7 +8077,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
 	  Field *new_field=
             create_tmp_field(thd, table, arg, arg->type(), &copy_func,
                              tmp_from_field, group != 0,not_all_columns,
-                             group || distinct,
+                             distinct,
                              param->convert_blob_length);
 	  if (!new_field)
 	    goto err;					// Should be OOM
@@ -8082,6 +8088,8 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
 	    *blob_field++= (uint) (reg_field - table->field);
 	    blob_count++;
 	  }
+          if (new_field->type() == FIELD_TYPE_BIT)
+            total_uneven_bit_length+= new_field->field_length & 7;
           new_field->field_index= (uint) (reg_field - table->field);
 	  *(reg_field++)= new_field;
           if (new_field->real_type() == MYSQL_TYPE_STRING ||
@@ -8117,12 +8125,16 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
 	write rows to the temporary table.
 	We here distinguish between UNION and multi-table-updates by the fact
 	that in the later case group is set to the row pointer.
+
+        The test for item->marker == 4 is ensure we don't create a group-by
+        key over a bit field as heap tables can't handle that.
       */
       Field *new_field= (param->schema_table) ?
         create_tmp_field_for_schema(thd, item, table) :
         create_tmp_field(thd, table, item, type, &copy_func,
                          tmp_from_field, group != 0,
-                         not_all_columns || group != 0, 0,
+                         not_all_columns || group != 0,
+                         item->marker == 4,
                          param->convert_blob_length);
 
       if (!new_field)
@@ -8154,7 +8166,14 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
       *(reg_field++) =new_field;
     }
     if (!--hidden_field_count)
+    {
+      /*
+        This was the last hidden field; Remember how many hidden fields could
+        have null
+      */
       hidden_null_count=null_count;
+      null_count= 0;
+    }
   }
   DBUG_ASSERT(field_count >= (uint) (reg_field - table->field));
   field_count= (uint) (reg_field - table->field);
@@ -8189,8 +8208,8 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
       null_count++;
   }
   hidden_null_pack_length=(hidden_null_count+7)/8;
-  null_pack_length= hidden_null_count +
-                    (null_count + total_uneven_bit_length + 7) / 8;
+  null_pack_length= (hidden_null_pack_length +
+                     (null_count + total_uneven_bit_length + 7) / 8);
   reclength+=null_pack_length;
   if (!reclength)
     reclength=1;				// Dummy select
@@ -12161,6 +12180,11 @@ calc_group_buffer(JOIN *join,ORDER *group)
 	key_length+=MAX_BLOB_WIDTH;		// Can't be used as a key
       else if (field->type() == MYSQL_TYPE_VARCHAR)
         key_length+= field->field_length + HA_KEY_BLOB_LENGTH;
+      else if (field->type() == FIELD_TYPE_BIT)
+      {
+        /* Bit is usually stored as a longlong key for group fields */
+        key_length+= 8;                         // Big enough
+      }
       else
 	key_length+= field->pack_length();
     }