Fixed some varnings from valgrind

Set min value of max_allowed_packet to 1024
Fixed problem with UNION's without braces and SQL_CALC_FOUND_ROWS, LIMIT #,#
and ORDER BY...LIMIT


include/m_string.h:
  Added memcpy_overlap() to avoid warnings when using valgrind on memcpy(A,A,...)
myisam/mi_create.c:
  Fixed comment
myisam/mi_search.c:
  Fix warning from valgrind
myisam/mi_write.c:
  Indentation fix
mysql-test/mysql-test-run.sh:
  Add options handled by general skip- option
mysql-test/r/packet.result:
  Update results after change to mysqld (min max_allowed_packet length is now 1024)
mysql-test/r/union.result:
  Added testing of UNION with SQL_CALC_FOUND_ROWS
mysql-test/t/packet.test:
  Update results after change to mysqld (min max_allowed_packet length is now 1024)
mysql-test/t/union.test:
  Added testing of UNION with SQL_CALC_FOUND_ROWS
sql/field.cc:
  Fix to remove waarning from valgrind
sql/ha_innodb.cc:
  Remove wrong include file
sql/item_cmpfunc.cc:
  Safety fix to handle EOM conditions in IN
sql/item_sum.cc:
  Fixed prototype for update_field() (argument was alwys 0)
sql/item_sum.h:
  Fixed prototype for update_field() (argument was alwys 0)
sql/item_uniq.h:
  Fixed prototype for update_field() (argument was alwys 0)
sql/log.cc:
  Indentation fix
sql/mysqld.cc:
  Set min value of max_allowed_packet to 1024 (to avoid it getting set to 0)
sql/net_serv.cc:
  Indentation changes + trivial optimization
sql/sql_select.cc:
  Fixed prototype for update_field() (argument was alwys 0)
sql/sql_union.cc:
  Fixed problem with UNION's without braces and
  - SQL_CALC_FOUND_ROWS
  - LIMIT #,#
  - ORDER BY ... LIMIT

1 files changed, 12 insertions, 0 deletions

diff --git a/include/m_string.h b/include/m_string.h
index c6943613b1a..eae0e8f3f94 100644
--- a/include/m_string.h
+++ b/include/m_string.h
@@ -119,6 +119,18 @@ extern	void bmove_allign(gptr dst,const gptr src,uint len);
 #define bmove512(A,B,C) memcpy(A,B,C)
 #endif
 
+#ifdef HAVE_purify
+#include <assert.h>
+#define memcpy_overlap(A,B,C) \
+DBUG_ASSERT((A) == (B) || ((A)+(C)) <= (B) || ((B)+(C)) <= (A)); \
+bmove((byte*) key,(byte*) from,(size_t) length);
+#else
+#define memcpy_overlap(A,B,C) \
+DBUG_ASSERT((A) == (B) || ((A)+(C)) <= (B) || ((B)+(C)) <= (A)); \
+memcpy((A), (B), (C))
+#endif /* HAVE_purify */
+
+
 	/* Prototypes for string functions */
 
 #if !defined(bfill) && !defined(HAVE_BFILL)