From: Gerd Möllmann <gerd@gnu.org>
Date: Sun, 18 Sep 2022 05:44:23 +0000 (+0200)
Subject: Fix possible null pointer access
X-Git-Tag: emacs-29.0.90~1856^2~407
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=117795a0594d1b4fc1c267311d789b0255ac6291;p=emacs.git

Fix possible null pointer access

* src/term.c (Ftty__output_buffer_size): Handle case of
decode_tty_terminal returning NULL.
---

diff --git a/src/term.c b/src/term.c
index 231324d002a..f8104e0304e 100644
--- a/src/term.c
+++ b/src/term.c
@@ -2433,7 +2433,9 @@ A value of zero means TTY uses the system's default value.  */)
   (Lisp_Object tty)
 {
   struct terminal *terminal = decode_tty_terminal (tty);
-  return make_fixnum (terminal->display_info.tty->output_buffer_size);
+  if (terminal)
+    return make_fixnum (terminal->display_info.tty->output_buffer_size);
+  error ("Not a tty terminal");
 }