Never pass a `char' to a ctype function. I had relied on gcc -Wall

[u/mdw/putty] / rlogin.c

diff --git a/rlogin.c b/rlogin.c
index 89a2bfe..7b13a78 100644 (file)
--- a/rlogin.c
+++ b/rlogin.c
@@ -169,7 +169,7 @@ static char *rlogin_init(void *frontend_handle, void **backend_handle,
        sk_write(rlogin->s, cfg->termtype,
                 strlen(cfg->termtype));
        sk_write(rlogin->s, "/", 1);
-       for (p = cfg->termspeed; isdigit(*p); p++) continue;
+       for (p = cfg->termspeed; isdigit((unsigned char)*p); p++) continue;
        sk_write(rlogin->s, cfg->termspeed, p - cfg->termspeed);
        rlogin->bufsize = sk_write(rlogin->s, &z, 1);
     }