Cast argument to unsigned char when invoking to{lower,upper}()

diff --git a/colorize.c b/colorize.c
index 88de5fbae3bef57398e0b8fd9df3ada996fa7f0a..16b2a12925dcefc016aaadb7b9abcbb947af1990 100644 (file)
--- a/colorize.c
+++ b/colorize.c
@@ -858,7 +858,7 @@ print_help (void)
         const char *code = entry->code;
         if (code)
           printf ("\t\t{\033[%s#\033[0m} [%c%c]%s%*s%s\n",
         const char *code = entry->code;
         if (code)
           printf ("\t\t{\033[%s#\033[0m} [%c%c]%s%*s%s\n",

-                   code, toupper (*name), *name, name + 1, 10 - (int)strlen (name), " ", name);
+                   code, toupper ((unsigned char)*name), *name, name + 1, 10 - (int)strlen (name), " ", name);

         else
           printf ("\t\t{-} %s%*s%s\n", name, 13 - (int)strlen (name), " ", name);
       }
         else
           printf ("\t\t{-} %s%*s%s\n", name, 13 - (int)strlen (name), " ", name);
       }


@@ -1238,7 +1238,7 @@ gather_color_names (const char *color_string, char *attr, struct color_name **co
         STACK_VAR (color_names[index]->orig);
 
         for (ch = color; *ch; ch++)
         STACK_VAR (color_names[index]->orig);
 
         for (ch = color; *ch; ch++)

-          *ch = tolower (*ch);
+          *ch = tolower ((unsigned char)*ch);

 
         color_names[index]->name = xstrdup (color);
         STACK_VAR (color_names[index]->name);
 
         color_names[index]->name = xstrdup (color);
         STACK_VAR (color_names[index]->name);


@@ -1848,7 +1848,7 @@ has_color_name (const char *str, const char *name)
     assert (strlen (str) > 0);
     assert (strlen (name) > 0);
 
     assert (strlen (str) > 0);
     assert (strlen (name) > 0);
 

-    if (!(*str == *name || *str == toupper (*name)))
+    if (!(*str == *name || *str == toupper ((unsigned char)*name)))

       return false;
     else if (*(name + 1) != '\0'
      && !((p = strstr (str + 1, name + 1)) && p == str + 1))
       return false;
     else if (*(name + 1) != '\0'
      && !((p = strstr (str + 1, name + 1)) && p == str + 1))