(string_to_non_ascii_char, multibyte_form_length)

(split_non_ascii_string, str_cmpchar_id): Make the STR argument
const unsigned char *.

2 files changed, 10 insertions, 9 deletions

diff --git a/src/charset.c b/src/charset.c
index acc24a29e25..8cbeafd7490 100644
--- a/src/charset.c
+++ b/src/charset.c
@@ -174,7 +174,7 @@ non_ascii_char_to_string (c, workbuf, str)
    directly if STR can hold an ASCII character.  */
 
 string_to_non_ascii_char (str, len, actual_len)
-     unsigned char *str;
+     const unsigned char *str;
      int len, *actual_len;
 {
   int charset;
@@ -200,7 +200,7 @@ string_to_non_ascii_char (str, len, actual_len)
 /* Return the length of the multi-byte form at string STR of length LEN.  */
 int
 multibyte_form_length (str, len)
-     unsigned char *str;
+     const unsigned char *str;
      int len;
 {
   int charset;
@@ -222,7 +222,8 @@ multibyte_form_length (str, len)
    which checks range of STR in advance.  */
 
 split_non_ascii_string (str, len, charset, c1, c2)
-     register unsigned char *str, *c1, *c2;
+     register const unsigned char *str;
+     register unsigned char *c1, *c2;
      register int len, *charset;
 {
   register unsigned int cs = *str++;
@@ -1205,7 +1206,7 @@ static int *cmpchar_hash_table[CMPCHAR_HASH_TABLE_SIZE];
    is the sole function for assigning CMPCHAR-ID.  */
 int
 str_cmpchar_id (str, len)
-     unsigned char *str;
+     const unsigned char *str;
      int len;
 {
   int hash_idx, *hashp;
@@ -1220,7 +1221,7 @@ str_cmpchar_id (str, len)
 
   /* At first, get the actual length of the composite character.  */
   {
-    unsigned char *p, *endp = str + 1, *lastp = str + len;
+    const unsigned char *p, *endp = str + 1, *lastp = str + len;
     int bytes;
 
     while (endp < lastp && ! CHAR_HEAD_P (*endp)) endp++;
diff --git a/src/charset.h b/src/charset.h
index dd2d8aa8c90..5ee27bf9003 100644
--- a/src/charset.h
+++ b/src/charset.h
@@ -793,12 +793,12 @@ extern int n_cmpchars;
 extern void invalid_character P_ ((int));
 
 extern int unify_char P_ ((Lisp_Object, int, int, int, int));
-extern int split_non_ascii_string P_ ((unsigned char *, int, int *,
+extern int split_non_ascii_string P_ ((const unsigned char *, int, int *,
                                        unsigned char *, unsigned char *));
-extern int string_to_non_ascii_char P_ ((unsigned char *, int, int *));
+extern int string_to_non_ascii_char P_ ((const unsigned char *, int, int *));
 extern int non_ascii_char_to_string P_ ((int, unsigned char *, unsigned char **));
-extern int multibyte_form_length P_ ((unsigned char *, int));
-extern int str_cmpchar_id P_ ((unsigned char *, int));
+extern int multibyte_form_length P_ ((const unsigned char *, int));
+extern int str_cmpchar_id P_ ((const unsigned char *, int));
 extern int get_charset_id P_ ((Lisp_Object));
 extern int cmpchar_component P_ ((unsigned int, unsigned int));
 extern int find_charset_in_str P_ ((unsigned char *, int, int *, Lisp_Object));