Use const char* instead of char*.

Reduce the number of warnings with -Wwrite-strings.
* src/xrdb.c (get_environ_db, get_system_name):
* src/unexelf.c (find_section):
* src/term.c (string_cost, string_cost_one_line, per_line_cost)
(get_named_tty, init_tty):
* src/sysdep.c (sys_subshell):
* src/sound.c (sound_perror, sound_warning, vox_open, vox_init)
(alsa_sound_perror, alsa_open, alsa_configure, alsa_init):
* src/search.c (Freplace_match):
* src/process.c (Fmake_network_process, send_process, init_process):
* src/lread.c (Fload, init_lread):
* src/keymap.c (Fdescribe_buffer_bindings, describe_map_tree):
* src/keyboard.c (parse_tool_bar_item, struct event_head):
* src/gtkutil.h (xg_get_font_name):
* src/gtkutil.c (get_dialog_title, create_dialog, xg_get_font_name)
(make_widget_for_menu_item, make_menu_item, create_menus)
(xg_make_tool_item):
* src/font.c (parse_matrix, font_parse_name):
* src/floatfns.c (rounding_driver, float_error_fn_name):
* src/filelock.c (get_boot_time_1, lock_file_1):
* src/fileio.c (barf_or_query_if_file_exists, check_writable):
* src/editfns.c (get_system_name, get_operating_system_release)
(Fencode_time, Fset_time_zone_rule):
* src/dispextern.h (string_cost, per_line_cost, get_named_tty, init_tty):
* src/buffer.c (defvar_per_buffer): Use const.

1 files changed, 5 insertions, 5 deletions

diff --git a/src/editfns.c b/src/editfns.c
index 0e034cc76fd..1bd6682c3b6 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -1404,16 +1404,16 @@ DEFUN ("system-name", Fsystem_name, Ssystem_name, 0, 0, 0,
 
 /* For the benefit of callers who don't want to include lisp.h */
 
-char *
+const char *
 get_system_name (void)
 {
   if (STRINGP (Vsystem_name))
-    return (char *) SDATA (Vsystem_name);
+    return (const char *) SDATA (Vsystem_name);
   else
     return "";
 }
 
-char *
+const char *
 get_operating_system_release (void)
 {
   if (STRINGP (Voperating_system_release))
@@ -1819,7 +1819,7 @@ usage: (encode-time SECOND MINUTE HOUR DAY MONTH YEAR &optional ZONE)  */)
   else
     {
       char tzbuf[100];
-      char *tzstring;
+      const char *tzstring;
       char **oldenv = environ, **newenv;
 
       if (EQ (zone, Qt))
@@ -2001,7 +2001,7 @@ If TZ is nil, use implementation-defined default time zone information.
 If TZ is t, use Universal Time.  */)
   (Lisp_Object tz)
 {
-  char *tzstring;
+  const char *tzstring;
 
   /* When called for the first time, save the original TZ.  */
   if (!environbuf)