Merge with 4.0.13

BitKeeper/etc/ignore:
  auto-union
BitKeeper/etc/logging_ok:
  auto-union
BUILD/SETUP.sh:
  Auto merged
BitKeeper/deleted/.del-libmysql.def~29fc6d70335f1c4c:
  Auto merged
Makefile.am:
  Auto merged
acinclude.m4:
  Auto merged
BitKeeper/triggers/post-commit:
  Auto merged
Build-tools/Do-compile:
  Auto merged
VC++Files/libmysql/libmysql.dsp:
  Auto merged
VC++Files/mysql.dsw:
  Auto merged
client/mysql.cc:
  Auto merged
client/mysqlbinlog.cc:
  Auto merged
client/mysqldump.c:
  Auto merged
include/config-win.h:
  Auto merged
include/my_base.h:
  Auto merged
include/my_global.h:
  Auto merged
include/my_pthread.h:
  Auto merged
include/my_sys.h:
  Auto merged
include/violite.h:
  Auto merged
innobase/buf/buf0flu.c:
  Auto merged
innobase/buf/buf0lru.c:
  Auto merged
innobase/include/buf0buf.h:
  Auto merged
innobase/include/buf0lru.h:
  Auto merged
innobase/include/row0mysql.h:
  Auto merged
innobase/include/srv0srv.h:
  Auto merged
innobase/lock/lock0lock.c:
  Auto merged
innobase/log/log0log.c:
  Auto merged
innobase/log/log0recv.c:
  Auto merged
innobase/os/os0file.c:
  Auto merged
innobase/row/row0mysql.c:
  Auto merged
innobase/row/row0sel.c:
  Auto merged
innobase/srv/srv0srv.c:
  Auto merged
innobase/srv/srv0start.c:
  Auto merged
innobase/trx/trx0sys.c:
  Auto merged
innobase/trx/trx0trx.c:
  Auto merged
innobase/ut/ut0ut.c:
  Auto merged
myisam/ft_boolean_search.c:
  Auto merged
myisam/mi_check.c:
  Auto merged
myisam/mi_key.c:
  Auto merged
myisam/mi_open.c:
  Auto merged
myisam/mi_range.c:
  Auto merged
myisam/mi_search.c:
  Auto merged
myisam/sort.c:
  Auto merged
mysql-test/r/delete.result:
  Auto merged
mysql-test/r/fulltext.result:
  Auto merged
mysql-test/r/innodb_handler.result:
  Auto merged
mysql-test/r/join.result:
  Auto merged
mysql-test/r/join_outer.result:
  Auto merged
mysql-test/r/key.result:
  Auto merged
mysql-test/r/multi_update.result:
  Auto merged
mysql-test/r/myisam.result:
  Auto merged
mysql-test/r/query_cache.result:
  Auto merged
mysql-test/r/select.result:
  Auto merged
mysql-test/r/variables.result:
  Auto merged
mysql-test/t/alter_table.test:
  Auto merged
mysql-test/t/ctype_latin1_de.test:
  Auto merged
mysql-test/t/delete.test:
  Auto merged
mysql-test/t/fulltext.test:
  Auto merged
mysql-test/t/innodb_handler.test:
  Auto merged
mysql-test/t/join.test:
  Auto merged
mysql-test/t/join_outer.test:
  Auto merged
mysql-test/t/key.test:
  Auto merged
mysql-test/t/multi_update.test:
  Auto merged
mysql-test/t/myisam.test:
  Auto merged
mysql-test/t/query_cache.test:
  Auto merged
mysql-test/t/repair.test:
  Auto merged
mysql-test/t/select_safe.test:
  Auto merged
mysql-test/t/type_decimal.test:
  Auto merged
mysql-test/t/variables.test:
  Auto merged
mysys/default.c:
  Auto merged
mysys/my_pthread.c:
  Auto merged
scripts/mysql_fix_privilege_tables.sh:
  Auto merged
scripts/mysqld_safe.sh:
  Auto merged
sql/ha_heap.h:
  Auto merged
sql/ha_innodb.h:
  Auto merged
sql/ha_myisam.cc:
  Auto merged
sql/handler.cc:
  Auto merged
sql/handler.h:
  Auto merged
sql/init.cc:
  Auto merged
sql/item.cc:
  Auto merged
sql/item_create.cc:
  Auto merged
sql/item_strfunc.cc:
  Auto merged
sql/item_sum.cc:
  Auto merged
sql/mini_client.cc:
  Auto merged
sql/net_serv.cc:
  Auto merged
sql/opt_range.cc:
  Auto merged
sql/records.cc:
  Auto merged
sql/slave.cc:
  Auto merged
sql/sql_acl.h:
  Auto merged
sql/sql_analyse.cc:
  Auto merged
sql/sql_class.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_list.h:
  Auto merged
sql/sql_load.cc:
  Auto merged
sql/share/czech/errmsg.txt:
  Auto merged
sql/share/danish/errmsg.txt:
  Auto merged
sql/share/dutch/errmsg.txt:
  Auto merged
sql/share/english/errmsg.txt:
  Auto merged
sql/share/estonian/errmsg.txt:
  Auto merged
sql/share/french/errmsg.txt:
  Auto merged
sql/share/greek/errmsg.txt:
  Auto merged
sql/share/hungarian/errmsg.txt:
  Auto merged
sql/share/italian/errmsg.txt:
  Auto merged
sql/share/japanese/errmsg.txt:
  Auto merged
sql/share/korean/errmsg.txt:
  Auto merged
sql/share/norwegian-ny/errmsg.txt:
  Auto merged
sql/share/norwegian/errmsg.txt:
  Auto merged
sql/share/portuguese/errmsg.txt:
  Auto merged
sql/share/romanian/errmsg.txt:
  Auto merged
sql/share/russian/errmsg.txt:
  Auto merged
sql/share/slovak/errmsg.txt:
  Auto merged
sql/share/spanish/errmsg.txt:
  Auto merged
sql/share/swedish/errmsg.txt:
  Auto merged
sql/share/ukrainian/errmsg.txt:
  Auto merged
sql/unireg.h:
  Auto merged
sql-bench/crash-me.sh:
  Auto merged
sql-bench/test-transactions.sh:
  Auto merged
strings/ctype-tis620.c:
  Auto merged
tests/grant.res:
  Auto merged
sql/log_event.cc:
  Merge with 4.0.13
  Cleaned up comment syntax

1 files changed, 7 insertions, 4 deletions

diff --git a/sql/filesort.cc b/sql/filesort.cc
index a3d24cd9242..68b8737bc79 100644
--- a/sql/filesort.cc
+++ b/sql/filesort.cc
@@ -494,6 +494,7 @@ static void make_sortkey(register SORTPARAM *param,
        sort_field != param->end ;
        sort_field++)
   {
+    bool maybe_null=0;
     if ((field=sort_field->field))
     {						// Field
       if (field->maybe_null())
@@ -519,7 +520,7 @@ static void make_sortkey(register SORTPARAM *param,
       case STRING_RESULT:
 	{
           CHARSET_INFO *cs=item->charset();
-	  if (item->maybe_null)
+	  if ((maybe_null=item->maybe_null))
 	    *to++=1;
 	  /* All item->str() to use some extra byte for end null.. */
 	  String tmp((char*) to,sort_field->length+4,cs);
@@ -567,7 +568,7 @@ static void make_sortkey(register SORTPARAM *param,
       case INT_RESULT:
 	{
 	  longlong value=item->val_int();
-	  if (item->maybe_null)
+	  if ((maybe_null=item->maybe_null))
 	    *to++=1;				/* purecov: inspected */
 	  if (item->null_value)
 	  {
@@ -601,13 +602,13 @@ static void make_sortkey(register SORTPARAM *param,
       case REAL_RESULT:
 	{
 	  double value=item->val();
-	  if (item->null_value)
+	  if ((maybe_null=item->null_value))
 	  {
 	    bzero((char*) to,sort_field->length+1);
 	    to++;
 	    break;
 	  }
-	  if (item->maybe_null)
+	  if ((maybe_null=item->maybe_null))
 	    *to++=1;
 	  change_double_for_sort(value,(byte*) to);
 	  break;
@@ -621,6 +622,8 @@ static void make_sortkey(register SORTPARAM *param,
     }
     if (sort_field->reverse)
     {							/* Revers key */
+      if (maybe_null)
+        to[-1]= ~to[-1];
       length=sort_field->length;
       while (length--)
       {