Fixes for embedded MySQL

Some limit optimization


BitKeeper/deleted/.del-ib_config.h.in~9e57db8504e55b7:
  Delete: innobase/ib_config.h.in
BitKeeper/deleted/.del-ib_config.h~7539e26ffc614439:
  Delete: innobase/ib_config.h
client/errmsg.c:
  Moved error messages from libmysqld/
client/mysql.cc:
  Removed warnings
include/errmsg.h:
  New info for embedded versions
include/mysql_com.h:
  Fixes for embedded MySQL
libmysql/errmsg.c:
  Fixes for embedded MySQL
libmysqld/Makefile.am:
  Added HANDLER code
libmysqld/lib_sql.cc:
  Fixes for embedded MySQL
libmysqld/lib_vio.c:
  Fixes for embedded MySQL
BitKeeper/etc/ignore:
  Added libmysqld/sql_handler.cc to the ignore list
libmysqld/libmysqld.c:
  Fixes for embedded MySQL
mysql-test/r/null_key.result:
  Fixed result for 4.0
sql/net_serv.cc:
  Fixes for embedded MySQL
sql/sql_parse.cc:
  Fixes for embedded MySQL where the query could be a const char*
sql/sql_select.cc:
  Added limit optimization
sql/sql_select.h:
  Added limit optimization

1 files changed, 2 insertions, 2 deletions

diff --git a/libmysqld/lib_vio.c b/libmysqld/lib_vio.c
index a1cd8ca9565..3238fd59699 100644
--- a/libmysqld/lib_vio.c
+++ b/libmysqld/lib_vio.c
@@ -156,13 +156,13 @@ int vio_write(Vio * vio, const gptr buf, int size)
   {
     *vio->last_packet = packet;
     vio->last_packet = (char **)packet;
-    *((char **)packet) = 0;	/* safety */
+    *((char **)packet) = 0;	/* Set forward link to 0 */
     packet += sizeof(char *);
     int4store(packet, size);
     memcpy(packet + 4, buf, size);
   }
   else
-    size=0;
+    size= -1;
   return (size);
 }