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

[u/mdw/putty] / ldisc.c

diff --git a/ldisc.c b/ldisc.c
index d569f11..91af0ac 100644 (file)
--- a/ldisc.c
+++ b/ldisc.c
@@ -164,8 +164,8 @@ void ldisc_send(void *handle, char *buf, int len, int interactive)
                        bsb(ldisc, plen(ldisc, ldisc->buf[ldisc->buflen - 1]));
                    ldisc->buflen--;
                    if (ldisc->buflen > 0 &&
-                       isspace(ldisc->buf[ldisc->buflen - 1]) &&
-                       !isspace(ldisc->buf[ldisc->buflen]))
+                       isspace((unsigned char)ldisc->buf[ldisc->buflen-1]) &&
+                       !isspace((unsigned char)ldisc->buf[ldisc->buflen]))
                        break;
                }
                break;