Cast ctype functions' argument to unsigned char.

ok guenther@

diff --git a/games/fortune/strfile/strfile.c b/games/fortune/strfile/strfile.c
index 4d9abe4..c44c37f 100644 (file)
--- a/games/fortune/strfile/strfile.c
+++ b/games/fortune/strfile/strfile.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: strfile.c,v 1.22 2015/09/16 16:32:11 tedu Exp $       */
+/*     $OpenBSD: strfile.c,v 1.23 2015/10/24 18:33:22 mmcc Exp $       */
 /*     $NetBSD: strfile.c,v 1.4 1995/04/24 12:23:09 cgd Exp $  */
 
 /*-
@@ -173,12 +173,12 @@ main(int ac, char *av[])
                                Tbl.str_shortlen = length;
                        first = Oflag;
                } else if (first) {
-                       for (nsp = sp; !isalnum(*nsp); nsp++)
+                       for (nsp = sp; !isalnum((unsigned char)*nsp); nsp++)
                                continue;
                        ALLOC(Firstch, Num_pts);
                        fp = &Firstch[Num_pts - 1];
-                       if (Iflag && isupper(*nsp))
-                               fp->first = tolower(*nsp);
+                       if (Iflag && isupper((unsigned char)*nsp))
+                               fp->first = tolower((unsigned char)*nsp);
                        else
                                fp->first = *nsp;
                        fp->pos = Seekpts[Num_pts - 1];
@@ -254,7 +254,7 @@ getargs(int argc, char *argv[])
                switch(ch) {
                case 'c':                       /* new delimiting char */
                        Delimch = *optarg;
-                       if (!isascii(Delimch)) {
+                       if (!isascii((unsigned char)Delimch)) {
                                printf("bad delimiting character: '\\%o\n'",
                                       Delimch);
                        }
@@ -357,7 +357,7 @@ unctrl(char c)
 {
        static char     buf[3];
 
-       if (isprint(c)) {
+       if (isprint((unsigned char)c)) {
                buf[0] = c;
                buf[1] = '\0';
        } else if (c == 0177) {