From 72d8d1c7f3928b386a2e64b75fcd03657658be24 Mon Sep 17 00:00:00 2001
From: Olivier Houchard <cognet@FreeBSD.org>
Date: Mon, 10 May 2004 15:52:16 +0000
Subject: [PATCH] Do not attempt ro read more than sizeof(buf) from stdin.

---
 usr.bin/talk/io.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/usr.bin/talk/io.c b/usr.bin/talk/io.c
index 00b2548f29c1..bcbf53580d06 100644
--- a/usr.bin/talk/io.c
+++ b/usr.bin/talk/io.c
@@ -138,6 +138,8 @@ talk()
 			 */
 			int i;
 			ioctl(0, FIONREAD, (void *) &nb);
+			if (nb > sizeof buf)
+				nb = sizeof buf;
 			nb = read(STDIN_FILENO, buf, nb);
 			display(&my_win, buf, nb);
 			/* might lose data here because sockt is non-blocking */