From: Richard M. Stallman <rms@gnu.org>
Date: Mon, 15 Nov 1993 12:28:01 +0000 (+0000)
Subject: (read_avail_input): Make cbuf 1 char shorter.
X-Git-Tag: emacs-19.34~10819
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=1727083501a3a25c59544e1d535ae9e5f5ffc8a6;p=emacs.git

(read_avail_input): Make cbuf 1 char shorter.
---

diff --git a/src/keyboard.c b/src/keyboard.c
index 249c594d2a8..47092b339fe 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -3027,7 +3027,10 @@ read_avail_input (expected)
     nread = (*read_socket_hook) (0, buf, KBD_BUFFER_SIZE, expected, expected);
   else
     {
-      unsigned char cbuf[KBD_BUFFER_SIZE];
+      /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than
+	 the kbd_buffer can really hold.  That may prevent loss
+	 of characters on some systems when input is stuffed at us.  */
+      unsigned char cbuf[KBD_BUFFER_SIZE - 1];
 
 #ifdef FIONREAD
       /* Find out how much input is available.  */