From: simon <simon@cda61777-01e9-0310-a592-d414129be87e>
Date: Thu, 9 Sep 2010 14:32:25 +0000 (+0000)
Subject: Cast incoming characters to unsigned char to avoid accidental sign
X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/commitdiff_plain/b96c714ea3802c22f3fe2659c121fd79ce28cbf2

Cast incoming characters to unsigned char to avoid accidental sign
extension. Since ldisc_send() uses bit 8 as an internal flag, we
shouldn't be setting it except when we really want to.


git-svn-id: svn://svn.tartarus.org/sgt/putty@8989 cda61777-01e9-0310-a592-d414129be87e
---

diff --git a/ldisc.c b/ldisc.c
index d57e6d17..f2853f4b 100644
--- a/ldisc.c
+++ b/ldisc.c
@@ -147,7 +147,7 @@ void ldisc_send(void *handle, char *buf, int len, int interactive)
     if (EDITING) {
 	while (len--) {
 	    int c;
-	    c = *buf++ + keyflag;
+	    c = (unsigned char)(*buf++) + keyflag;
 	    if (!interactive && c == '\r')
 		c += KCTRL('@');
 	    switch (ldisc->quotenext ? ' ' : c) {