Fixed issues found by valgrind

- mysqltest didn't free read_command_buf
- wait_for_slave_param did write different things to the log if valgrind
  was used.
- Table open cache should not write the initial variable value as it
  can depend on the configuration or if valgrind is used
- A variable in GetResult was used uninitalized

client/mysqltest.cc

@@ -193,6 +193,7 @@ static char TMPDIR[FN_REFLEN];
 static char global_subst_from[200];
 static char global_subst_to[200];
 static char *global_subst= NULL;
+static char *read_command_buf= NULL;
 static MEM_ROOT require_file_root;
 static const my_bool my_true= 1;
 static const my_bool my_false= 0;
@@ -1531,6 +1532,7 @@ void free_used_memory()
   free_defaults(default_argv);
   free_root(&require_file_root, MYF(0));
   free_re();
+  my_free(read_command_buf);
 #ifdef _WIN32
   free_tmp_sh_file();
   free_win_path_patterns();
@@ -6563,7 +6565,6 @@ static inline bool is_escape_char(char c, char in_string)
 
 */
 
-static char *read_command_buf= NULL;
 static size_t read_command_buflen= 0;
 static const size_t max_multibyte_length= 6;
 

mysql-test/include/wait_for_slave_param.inc

@@ -69,7 +69,7 @@ if (!$_slave_param_comparison)
 
 if ($rpl_debug)
 {
-  --echo Waiting until '$slave_param' $_slave_param_comparison '$slave_param_value' [timeout='$_slave_timeout', \$slave_error_param='$slave_error_param']
+  --echo Waiting until '$slave_param' $_slave_param_comparison '$slave_param_value' [\$slave_error_param='$slave_error_param']
 }
 
 --let $_slave_check_configured= query_get_value("SHOW SLAVE STATUS", Slave_IO_Running, 1)

mysql-test/suite/rpl/r/rpl_gtid_delete_domain.result

@@ -41,7 +41,7 @@ START SLAVE;
 .. con='slave' warn='1' qlog='1' rlog='1' aborterr='1'
 ...==== BEGIN include/wait_for_slave_param.inc [Slave_IO_Running] ====
 ... con='slave' warn='1' qlog='1' rlog='1' aborterr='1'
-Waiting until 'Slave_IO_Running' = 'Yes' [timeout='300', $slave_error_param='Last_IO_Errno']
+Waiting until 'Slave_IO_Running' = 'Yes' [$slave_error_param='Last_IO_Errno']
 [connection slave]
 ...==== END include/wait_for_slave_param.inc [Slave_IO_Running] ====
 ... con='slave' warn='1' qlog='1' rlog='1' aborterr='1'
@@ -52,7 +52,7 @@ Waiting until 'Slave_IO_Running' = 'Yes' [timeout='300', $slave_error_param='Las
 .. con='slave' warn='1' qlog='1' rlog='1' aborterr='1'
 ...==== BEGIN include/wait_for_slave_param.inc [Slave_SQL_Running] ====
 ... con='slave' warn='1' qlog='1' rlog='1' aborterr='1'
-Waiting until 'Slave_SQL_Running' = 'Yes' [timeout='300', $slave_error_param='1']
+Waiting until 'Slave_SQL_Running' = 'Yes' [$slave_error_param='1']
 [connection slave]
 ...==== END include/wait_for_slave_param.inc [Slave_SQL_Running] ====
 ... con='slave' warn='1' qlog='1' rlog='1' aborterr='1'

mysql-test/suite/sys_vars/r/table_open_cache_basic.result

@@ -1,18 +1,9 @@
 SET @start_value = @@global.table_open_cache ;
-SELECT @start_value;
-@start_value
-421
-'#--------------------FN_DYNVARS_001_01------------------------#'
-SET @@global.table_open_cache  = 99;
-SET @@global.table_open_cache  = DeFAULT;
-SELECT @@global.table_open_cache;
-@@global.table_open_cache
-2000
 '#---------------------FN_DYNVARS_001_02-------------------------#'
 SET @@global.table_open_cache = Default;
-SELECT @@global.table_open_cache  = 400;
+SELECT @@global.table_open_cache > 0;
-@@global.table_open_cache  = 400
+@@global.table_open_cache > 0
-0
+1
 '#--------------------FN_DYNVARS_001_03------------------------#'
 SET @@global.table_open_cache  = 8;
 Warnings:
@@ -101,13 +92,8 @@ SELECT @@table_open_cache = @@global.table_open_cache ;
 '#---------------------FN_DYNVARS_001_11----------------------#'
 SET table_open_cache = 8;
 ERROR HY000: Variable 'table_open_cache' is a GLOBAL variable and should be set with SET GLOBAL
-SET global.table_open_cache = 10;
-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 'table_open_cache = 10' at line 1
 SELECT global.table_open_cache ;
 ERROR 42S02: Unknown table 'global' in field list
 SELECT table_open_cache = @@session.table_open_cache ;
 ERROR 42S22: Unknown column 'table_open_cache' in 'field list'
 SET @@global.table_open_cache = @start_value;
-SELECT @@global.table_open_cache ;
-@@global.table_open_cache
-421

mysql-test/suite/sys_vars/t/table_open_cache_basic.test

@@ -35,18 +35,6 @@
 ########################################################################## 
 
 SET @start_value = @@global.table_open_cache ;
-SELECT @start_value;
-
-
---echo '#--------------------FN_DYNVARS_001_01------------------------#'
-######################################################################## 
-#              Display the DEFAULT value of table_open_cache           #
-######################################################################## 
-
-SET @@global.table_open_cache  = 99;
-SET @@global.table_open_cache  = DeFAULT;
-SELECT @@global.table_open_cache;
-
 
 --echo '#---------------------FN_DYNVARS_001_02-------------------------#'
 ############################################### 
@@ -54,7 +42,7 @@ SELECT @@global.table_open_cache;
 ############################################### 
 
 SET @@global.table_open_cache = Default;
-SELECT @@global.table_open_cache  = 400;
+SELECT @@global.table_open_cache > 0;
 
 --echo '#--------------------FN_DYNVARS_001_03------------------------#'
 ######################################################################## 
@@ -152,8 +140,6 @@ SELECT @@table_open_cache = @@global.table_open_cache ;
 
 --Error ER_GLOBAL_VARIABLE
 SET table_open_cache = 8;
---Error ER_PARSE_ERROR
-SET global.table_open_cache = 10;
 --Error ER_UNKNOWN_TABLE
 SELECT global.table_open_cache ;
 --Error ER_BAD_FIELD_ERROR
@@ -165,10 +151,7 @@ SELECT table_open_cache = @@session.table_open_cache ;
 ##############################
 
 SET @@global.table_open_cache = @start_value;
-SELECT @@global.table_open_cache ;
-
 
 ##################################################################
 #              END OF table_open_cache  TESTS                    #
 ##################################################################
-

storage/connect/myconn.cpp

@@ -879,7 +879,7 @@ MYSQL_FIELD *MYSQLC::GetNextField(void)
 PQRYRES MYSQLC::GetResult(PGLOBAL g, bool pdb)
   {
 	PCSZ         fmt;
-  char        *name, v;
+  char        *name, v= 0;
   int          n;
   bool         uns;
   PCOLRES     *pcrp, crp;