Polishing: generate more warnings and make code warnings-free.

server-tools/instance-manager/Makefile.am:
  Generate more warnings.
server-tools/instance-manager/commands.cc:
  Eliminate warnings.
server-tools/instance-manager/commands.h:
  Eliminate warnings.
server-tools/instance-manager/instance.cc:
  Eliminate warnings.
server-tools/instance-manager/mysql_connection.cc:
  Eliminate warnings.
server-tools/instance-manager/parse.cc:
  Eliminate warnings.
server-tools/instance-manager/user_map.cc:
  Eliminate warnings.
server-tools/instance-manager/user_map.h:
  Eliminate warnings.

server-tools/instance-manager/Makefile.am

@@ -61,7 +61,7 @@ client_settings.h:
 
 libexec_PROGRAMS= mysqlmanager
 
-mysqlmanager_CXXFLAGS=  -Werror
+mysqlmanager_CXXFLAGS=  -Wall -Wextra -Werror
 
 mysqlmanager_SOURCES=	command.cc command.h mysqlmanager.cc \
 			manager.h manager.cc log.h log.cc \

server-tools/instance-manager/commands.cc

@@ -130,7 +130,7 @@ Instance_name::Instance_name(const LEX_STRING *name)
     ER_OUT_OF_RESOURCES         Not enough resources to complete the operation
 */
 
-int Show_instances::execute(st_net *net, ulong connection_id)
+int Show_instances::execute(st_net *net, ulong /* connection_id */)
 {
   int err_code;
 
@@ -309,7 +309,8 @@ int Show_instance_status::execute_impl(st_net *net, Instance *instance)
 }
 
 
-int Show_instance_status::send_ok_response(st_net *net, ulong connection_id)
+int Show_instance_status::send_ok_response(st_net *net,
+                                           ulong /* connection_id */)
 {
   if (send_eof(net) || net_flush(net))
     return ER_OUT_OF_RESOURCES;
@@ -429,7 +430,8 @@ int Show_instance_options::execute_impl(st_net *net, Instance *instance)
 }
 
 
-int Show_instance_options::send_ok_response(st_net *net, ulong connection_id)
+int Show_instance_options::send_ok_response(st_net *net,
+                                            ulong /* connection_id */)
 {
   if (send_eof(net) || net_flush(net))
     return ER_OUT_OF_RESOURCES;
@@ -512,7 +514,7 @@ Start_instance::Start_instance(const LEX_STRING *instance_name_arg)
     ER_OUT_OF_RESOURCES         Not enough resources to complete the operation
 */
 
-int Start_instance::execute_impl(st_net *net, Instance *instance)
+int Start_instance::execute_impl(st_net * /* net */, Instance *instance)
 {
   int err_code;
 
@@ -553,7 +555,7 @@ Stop_instance::Stop_instance(const LEX_STRING *instance_name_arg)
     ER_OUT_OF_RESOURCES         Not enough resources to complete the operation
 */
 
-int Stop_instance::execute_impl(st_net *net, Instance *instance)
+int Stop_instance::execute_impl(st_net * /* net */, Instance *instance)
 {
   int err_code;
 
@@ -803,7 +805,7 @@ Drop_instance::Drop_instance(const LEX_STRING *instance_name_arg)
     ER_OUT_OF_RESOURCES         Not enough resources to complete the operation
 */
 
-int Drop_instance::execute_impl(st_net *net, Instance *instance)
+int Drop_instance::execute_impl(st_net * /* net */, Instance *instance)
 {
   int err_code;
 
@@ -899,7 +901,8 @@ int Show_instance_log::execute_impl(st_net *net, Instance *instance)
 }
 
 
-int Show_instance_log::send_ok_response(st_net *net, ulong connection_id)
+int Show_instance_log::send_ok_response(st_net *net,
+                                        ulong /* connection_id */)
 {
   if (send_eof(net) || net_flush(net))
     return ER_OUT_OF_RESOURCES;
@@ -1030,7 +1033,8 @@ int Show_instance_log_files::execute_impl(st_net *net, Instance *instance)
 }
 
 
-int Show_instance_log_files::send_ok_response(st_net *net, ulong connection_id)
+int Show_instance_log_files::send_ok_response(st_net *net,
+                                              ulong /* connection_id */)
 {
   if (send_eof(net) || net_flush(net))
     return ER_OUT_OF_RESOURCES;
@@ -1689,7 +1693,7 @@ int Unset_option::process_option(Instance *instance, Named_value *option)
  Implementation of Syntax_error.
 **************************************************************************/
 
-int Syntax_error::execute(st_net *net, ulong connection_id)
+int Syntax_error::execute(st_net * /* net */, ulong /* connection_id */)
 {
   return ER_SYNTAX_ERROR;
 }

server-tools/instance-manager/commands.h

@@ -37,6 +37,10 @@
 
 class Show_instances : public Command
 {
+public:
+  Show_instances()
+  { }
+
 public:
   int execute(st_net *net, ulong connection_id);
 
@@ -53,6 +57,10 @@ private:
 
 class Flush_instances : public Command
 {
+public:
+  Flush_instances()
+  { }
+
 public:
   int execute(st_net *net, ulong connection_id);
 };
@@ -311,6 +319,10 @@ private:
 
 class Set_option : public Abstract_option_cmd
 {
+public:
+  Set_option()
+  { }
+
 protected:
   virtual bool parse_args(const char **text);
   virtual int process_option(Instance *instance, Named_value *option);
@@ -324,6 +336,10 @@ protected:
 
 class Unset_option: public Abstract_option_cmd
 {
+public:
+  Unset_option()
+  { }
+
 protected:
   virtual bool parse_args(const char **text);
   virtual int process_option(Instance *instance, Named_value *option);
@@ -341,6 +357,10 @@ protected:
 
 class Syntax_error : public Command
 {
+public:
+  Syntax_error()
+  { }
+
 public:
   int execute(st_net *net, ulong connection_id);
 };

server-tools/instance-manager/instance.cc

@@ -429,7 +429,7 @@ void Instance::set_crash_flag_n_wake_all()
 
 
 Instance::Instance(Thread_registry &thread_registry_arg):
-  crashed(FALSE), configured(FALSE), thread_registry(thread_registry_arg)
+  thread_registry(thread_registry_arg), crashed(FALSE), configured(FALSE)
 {
   pthread_mutex_init(&LOCK_instance, 0);
   pthread_cond_init(&COND_instance_stopped, 0);

server-tools/instance-manager/mysql_connection.cc

@@ -86,7 +86,7 @@ private:
   int check_connection();
   int do_command();
   int dispatch_command(enum enum_server_command command,
-                       const char *text, uint len);
+                       const char *text);
 };
 
 
@@ -317,12 +317,12 @@ int Mysql_connection_thread::do_command()
                                       (uchar) *packet;
     log_info("connection %d: packet_length=%d, command=%d",
              (int) connection_id, (int) packet_length, (int) command);
-    return dispatch_command(command, packet + 1, packet_length - 1);
+    return dispatch_command(command, packet + 1);
   }
 }
 
 int Mysql_connection_thread::dispatch_command(enum enum_server_command command,
-                                              const char *packet, uint len)
+                                              const char *packet)
 {
   switch (command) {
   case COM_QUIT:                                // client exit

server-tools/instance-manager/parse.cc

@@ -274,7 +274,6 @@ Command *parse_command(const char *text)
   uint word_len;
   LEX_STRING instance_name;
   Command *command= 0;
-  const char *saved_text= text;
 
   Token tok1= shift_token(&text, &word_len);
 

server-tools/instance-manager/user_map.cc

@@ -186,7 +186,6 @@ int User_map::load(const char *password_file_name, const char **err_msg)
             2 +                               /* for newline */
             1];                               /* for trailing zero */
   User *user;
-  int rc= 1;
 
   if (my_access(password_file_name, F_OK) != 0)
   {

server-tools/instance-manager/user_map.h

@@ -60,7 +60,7 @@ public:
   {
   public:
     Iterator(User_map *user_map_arg) :
-      cur_idx(0), user_map(user_map_arg)
+      user_map(user_map_arg), cur_idx(0)
     { }
 
   public: