Fixed memory reference errors found by valgrind

sql/ha_federated.cc:
  Change mode to -rw-rw-r--
myisam/mi_create.c:
  Ensure that all referenced memory is reset
mysql-test/r/type_timestamp.result:
  More tests
mysql-test/t/func_compress.test:
  Added comment
mysql-test/t/type_timestamp.test:
  More tests
sql/field.h:
  Count number of varchars in table
sql/item_cmpfunc.cc:
  Safety fix (to avoid warning from valgrind)
sql/opt_range.cc:
  Simple optimzation
sql/sql_acl.cc:
  Safety fix (to avoid warning from valgrind)
sql/sql_parse.cc:
  Safety fix for prepared statements
sql/sql_show.cc:
  Move variable declarations first in function
  Remove hidden variable (it)
  Remove accessing freed memory (table_list->table_name)
sql/sql_update.cc:
  Compare records with varchars correctly
sql/table.cc:
  Safety fix when running with purify/valgrind
  Fix wrong memory reference in case of errors
sql/table.h:
  Added counting of varchar fields
strings/ctype-mb.c:
  Fill max_str properly

1 files changed, 4 insertions, 0 deletions

diff --git a/mysql-test/r/type_timestamp.result b/mysql-test/r/type_timestamp.result
index 42fdc7e50c6..61c167c6264 100644
--- a/mysql-test/r/type_timestamp.result
+++ b/mysql-test/r/type_timestamp.result
@@ -35,6 +35,10 @@ UPDATE t1 SET value="my value" WHERE id="myKey";
 SELECT stamp FROM t1 WHERE id="myKey";
 stamp
 1999-04-02 00:00:00
+UPDATE t1 SET id="myKey" WHERE value="my value";
+SELECT stamp FROM t1 WHERE id="myKey";
+stamp
+1999-04-02 00:00:00
 drop table t1;
 create table t1 (a timestamp);
 insert into t1 values (now());