diff --git a/BitKeeper/etc/logging_ok b/BitKeeper/etc/logging_ok
index 6761a96b06b..c0505dbdd10 100644
--- a/BitKeeper/etc/logging_ok
+++ b/BitKeeper/etc/logging_ok
@@ -29,6 +29,7 @@ heikki@rescue.
 heikki@work.mysql.com
 hf@bison.(none)
 hf@bisonxp.(none)
+hf@deer.(none)
 hf@deer.mysql.r18.ru
 hf@genie.(none)
 igor@hundin.mysql.fi
diff --git a/include/mysql.h b/include/mysql.h
index 67dc9ae08c9..65713257f0e 100644
--- a/include/mysql.h
+++ b/include/mysql.h
@@ -127,7 +127,7 @@ typedef struct st_mysql_data {
   unsigned int fields;
   MYSQL_ROWS *data;
   MEM_ROOT alloc;
-#ifdef EMBEDDED_LIBRARY
+#if !defined(CHECK_EMBEDDED_DIFFERENCES) || defined(EMBEDDED_LIBRARY)
   MYSQL_ROWS **prev_ptr;
 #endif
 } MYSQL_DATA;
@@ -162,7 +162,7 @@ struct st_mysql_options {
    a read that is replication-aware
  */
   my_bool no_master_reads;
-#ifdef EMBEDDED_LIBRARY
+#if !defined(CHECK_EMBEDDED_DIFFERENCES) || defined(EMBEDDED_LIBRARY)
   my_bool separate_thread;
 #endif
   char *shared_memory_base_name;
@@ -174,7 +174,7 @@ enum mysql_option
   MYSQL_OPT_CONNECT_TIMEOUT, MYSQL_OPT_COMPRESS, MYSQL_OPT_NAMED_PIPE, MYSQL_INIT_COMMAND,
   MYSQL_READ_DEFAULT_FILE, MYSQL_READ_DEFAULT_GROUP,MYSQL_SET_CHARSET_DIR, MYSQL_SET_CHARSET_NAME,
   MYSQL_OPT_LOCAL_INFILE, MYSQL_OPT_PROTOCOL, MYSQL_SHARED_MEMORY_BASE_NAME
-#ifdef EMBEDDED_LIBRARY
+#if !defined(CHECK_EMBEDDED_DIFFERENCES) || defined(EMBEDDED_LIBRARY)
   , MYSQL_OPT_USE_RESULT
 #endif
 };
@@ -200,7 +200,7 @@ enum mysql_rpl_type
 };
 
 
-#ifndef EMBEDDED_LIBRARY
+#if !defined(CHECK_EMBEDDED_DIFFERENCES) || !defined(EMBEDDED_LIBRARY)
 
 typedef struct st_mysql
 {
@@ -245,6 +245,12 @@ typedef struct st_mysql
   struct st_mysql* last_used_con;
 
   LIST  *stmts;                     /* list of all statements */
+#if !defined(CHECK_EMBEDDED_DIFFERENCES)
+  struct st_mysql_res *result;
+  void *thd;
+  unsigned int last_errno;
+  char *last_error;
+#endif
 } MYSQL;
 
 #else
diff --git a/include/mysql_com.h b/include/mysql_com.h
index bbfb869927b..1af1ed36af6 100644
--- a/include/mysql_com.h
+++ b/include/mysql_com.h
@@ -125,7 +125,7 @@ typedef struct st_vio Vio;
 #define MAX_BLOB_WIDTH		8192	/* Default width for blob */
 
 typedef struct st_net {
-#ifndef EMBEDDED_LIBRARY
+#if !defined(CHECK_EMBEDDED_DIFFERENCES) || !defined(EMBEDDED_LIBRARY)
   Vio* vio;
   unsigned char *buff,*buff_end,*write_pos,*read_pos;
   my_socket fd;					/* For Perl DBI/dbd */