* editfns.c (get_system_name): Remove.

* lisp.h (get_system_name): Remove prototype.
* xrdb.c (getenv, getpwuid, getpwnam): Remove prototypes.
(get_environ_db): Use Vsystem_name.  Avoid call to strlen.

src/ChangeLog

+2012-10-16  Dmitry Antipov  <dmantipov@yandex.ru>
+
+	* editfns.c (get_system_name): Remove.
+	* lisp.h (get_system_name): Remove prototype.
+	* xrdb.c (getenv, getpwuid, getpwnam): Remove prototypes.
+	(get_environ_db): Use Vsystem_name.  Avoid call to strlen.
+
 2012-10-15  Daniel Colascione  <dancol@dancol.org>
 
 	* dbusbind.c: Add comment explaining reason for previous change.

src/editfns.c

@@ -1339,15 +1339,6 @@ DEFUN ("system-name", Fsystem_name, Ssystem_name, 0, 0, 0,
   return Vsystem_name;
 }
 
-const char *
-get_system_name (void)
-{
-  if (STRINGP (Vsystem_name))
-    return SSDATA (Vsystem_name);
-  else
-    return "";
-}
-
 DEFUN ("emacs-pid", Femacs_pid, Semacs_pid, 0, 0, 0,
        doc: /* Return the process ID of Emacs, as a number.  */)
   (void)

src/lisp.h

@@ -3127,7 +3127,6 @@ extern Lisp_Object make_buffer_string (ptrdiff_t, ptrdiff_t, bool);
 extern Lisp_Object make_buffer_string_both (ptrdiff_t, ptrdiff_t, ptrdiff_t,
 					    ptrdiff_t, bool);
 extern void init_editfns (void);
-const char *get_system_name (void);
 extern void syms_of_editfns (void);
 extern void set_time_zone_rule (const char *);
 

src/xrdb.c

@@ -24,7 +24,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include <unistd.h>
 #include <errno.h>
 #include <epaths.h>
-
+#include <stdlib.h>
 #include <stdio.h>
 
 #include "lisp.h"
@@ -48,11 +48,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "keyboard.h"
 #endif
 
-extern char *getenv (const char *);
-
-extern struct passwd *getpwuid (uid_t);
-extern struct passwd *getpwnam (const char *);
-
 char *x_get_string_resource (XrmDatabase rdb, const char *name,
 			     const char *class);
 static int file_p (const char *filename);
@@ -429,8 +424,9 @@ get_environ_db (void)
     {
       static char const xdefaults[] = ".Xdefaults-";
       char *home = gethomedir ();
-      char const *host = get_system_name ();
-      ptrdiff_t pathsize = strlen (home) + sizeof xdefaults + strlen (host);
+      char const *host = SSDATA (Vsystem_name);
+      ptrdiff_t pathsize = (strlen (home) + sizeof xdefaults
+			    + SBYTES (Vsystem_name));
       path = xrealloc (home, pathsize);
       strcat (strcat (path, xdefaults), host);
       p = path;