Cast ctype functions' argument to unsigned char.

ok guenther@

diff --git a/games/number/number.c b/games/number/number.c
index 1867918..a8053c6 100644 (file)
--- a/games/number/number.c
+++ b/games/number/number.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: number.c,v 1.15 2015/10/14 08:12:12 doug Exp $        */
+/*     $OpenBSD: number.c,v 1.16 2015/10/24 18:37:23 mmcc Exp $        */
 
 /*
  * Copyright (c) 1988, 1993, 1994
@@ -126,18 +126,18 @@ convert(char *line)
 
        /* strip trailing and leading whitespace */
        len = strlen(line) - 1;
-       while ((isblank(line[len])) || (line[len] == '\n'))
+       while ((isblank((unsigned char)line[len])) || (line[len] == '\n'))
                line[len--] = '\0';
-       while ((isblank(line[0])) || (line[0] == '\n'))
+       while ((isblank((unsigned char)line[0])) || (line[0] == '\n'))
                line++;
        if (strchr(line, 'e') || strchr(line, 'E'))
                convertexp(line);
        else {
        fraction = NULL;
        for (p = line; *p != '\0' && *p != '\n'; ++p) {
-               if (isblank(*p))
+               if (isblank((unsigned char)*p))
                        goto badnum;
-               if (isdigit(*p))
+               if (isdigit((unsigned char)*p))
                        continue;
                switch (*p) {
                case '.':
@@ -215,7 +215,7 @@ convertexp(char *line)
         */
        j = strlen(line);
        for (i = 0; i < j; i++)
-               if ((!isdigit(locline[i])) && (locline[i]))
+               if ((!isdigit((unsigned char)locline[i])) && (locline[i]))
                        if (((locline[i] != '+') && (locline[i] != '-')) ||
                                ((i != 0) && (i != part3 - locline)))
                                errx(1, "illegal number: %s", line);