Merge bk@192.168.21.1:mysql-5.1-opt

into  mysql.com:/home/hf/work/25097/my51-25097

client/mysql.cc

@@ -421,6 +421,7 @@ int main(int argc,char *argv[])
   if (mysql_server_init(embedded_server_arg_count, embedded_server_args, 
                         (char**) embedded_server_groups))
   {
+    put_error(NULL);
     free_defaults(defaults_argv);
     my_end(0);
     exit(1);

include/sql_common.h

@@ -15,6 +15,7 @@
 
 
 extern const char	*unknown_sqlstate;
+extern const char	*cant_connect_sqlstate;
 extern const char	*not_error_sqlstate;
 
 #ifdef	__cplusplus

libmysql/libmysql.c

@@ -1500,7 +1500,7 @@ my_ulonglong STDCALL mysql_insert_id(MYSQL *mysql)
 
 const char *STDCALL mysql_sqlstate(MYSQL *mysql)
 {
-  return mysql->net.sqlstate;
+  return mysql ? mysql->net.sqlstate : cant_connect_sqlstate;
 }
 
 uint STDCALL mysql_warning_count(MYSQL *mysql)

libmysqld/lib_sql.cc

@@ -38,6 +38,8 @@ C_MODE_START
 #include <sql_common.h>
 #include "embedded_priv.h"
 
+extern unsigned int mysql_server_last_errno;
+extern char mysql_server_last_error[MYSQL_ERRMSG_SIZE];
 static my_bool emb_read_query_result(MYSQL *mysql);
 
 
@@ -1122,3 +1124,12 @@ bool Protocol::net_store_data(const uchar *from, size_t length)
   return FALSE;
 }
 
+
+int vprint_msg_to_log(enum loglevel level __attribute__((unused)),
+                       const char *format, va_list argsi)
+{
+  vsnprintf(mysql_server_last_error, sizeof(mysql_server_last_error),
+           format, argsi);
+  mysql_server_last_errno= CR_UNKNOWN_ERROR;
+  return 0;
+}

sql-common/client.c

@@ -112,6 +112,7 @@ uint		mysql_port=0;
 char		*mysql_unix_port= 0;
 const char	*unknown_sqlstate= "HY000";
 const char	*not_error_sqlstate= "00000";
+const char	*cant_connect_sqlstate= "08001";
 #ifdef HAVE_SMEM
 char		 *shared_memory_base_name= 0;
 const char 	*def_shared_memory_base_name= default_shared_memory_base_name;
@@ -126,6 +127,9 @@ static int wait_for_data(my_socket fd, uint timeout);
 
 CHARSET_INFO *default_client_charset_info = &my_charset_latin1;
 
+/* Server error code and message */
+unsigned int mysql_server_last_errno;
+char mysql_server_last_error[MYSQL_ERRMSG_SIZE];
 
 /****************************************************************************
   A modified version of connect().  my_connect() allows you to specify
@@ -288,11 +292,18 @@ void set_mysql_error(MYSQL *mysql, int errcode, const char *sqlstate)
   DBUG_PRINT("enter", ("error :%d '%s'", errcode, ER(errcode)));
   DBUG_ASSERT(mysql != 0);
 
-  net= &mysql->net;
-  net->client_last_errno= errcode;
-  strmov(net->client_last_error, ER(errcode));
-  strmov(net->sqlstate, sqlstate);
-
+  if (mysql)
+  {
+    net= &mysql->net;
+    net->client_last_errno= errcode;
+    strmov(net->client_last_error, ER(errcode));
+    strmov(net->sqlstate, sqlstate);
+  }
+  else
+  {
+    mysql_server_last_errno= errcode;
+    strmov(mysql_server_last_error, ER(errcode));
+  }
   DBUG_VOID_RETURN;
 }
 
@@ -1489,7 +1500,10 @@ mysql_init(MYSQL *mysql)
   if (!mysql)
   {
     if (!(mysql=(MYSQL*) my_malloc(sizeof(*mysql),MYF(MY_WME | MY_ZEROFILL))))
+    {
+      set_mysql_error(NULL, CR_OUT_OF_MEMORY, unknown_sqlstate);
       return 0;
+    }
     mysql->free_me=1;
   }
   else
@@ -3079,13 +3093,13 @@ unsigned int STDCALL mysql_num_fields(MYSQL_RES *res)
 
 uint STDCALL mysql_errno(MYSQL *mysql)
 {
-  return mysql->net.client_last_errno;
+  return mysql ? mysql->net.client_last_errno : mysql_server_last_errno;
 }
 
 
 const char * STDCALL mysql_error(MYSQL *mysql)
 {
-  return mysql->net.client_last_error;
+  return mysql ? mysql->net.client_last_error : mysql_server_last_error;
 }
 
 

sql/log.cc

@@ -4438,15 +4438,7 @@ static void print_buffer_to_nt_eventlog(enum loglevel level, char *buff,
     return an error (e.g. logging to the log tables)
 */
 
-#ifdef EMBEDDED_LIBRARY
-int vprint_msg_to_log(enum loglevel level __attribute__((unused)),
-                       const char *format __attribute__((unused)),
-                       va_list argsi __attribute__((unused)))
-{
-  DBUG_ENTER("vprint_msg_to_log");
-  DBUG_RETURN(0);
-}
-#else /*!EMBEDDED_LIBRARY*/
+#ifndef EMBEDDED_LIBRARY
 static void print_buffer_to_file(enum loglevel level, const char *buffer)
 {
   time_t skr;