From e73651f12a406629778f02d8e5acbe2caec0dfc2 Mon Sep 17 00:00:00 2001
From: Hiltjo Posthuma <hiltjo@codemadness.org>
Date: Sat, 26 Mar 2022 17:58:47 +0100
Subject: [PATCH] fix UB with the function iscntrl()
From commit 6818e07291f3b2913e687c8ec3d3fe4711724050 by NRK, thanks
---
dmenu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/dmenu.c b/dmenu.c
index 085dc29..839f6cc 100644
--- a/dmenu.c
+++ b/dmenu.c
@@ -415,7 +415,7 @@ keypress(XKeyEvent *ev)
switch(ksym) {
default:
insert:
- if (!iscntrl(*buf))
+ if (!iscntrl((unsigned char)*buf))
insert(buf, len);
break;
case XK_Delete: