From: Noah Friedman <friedman@splode.com>
Date: Thu, 29 Oct 2020 21:55:37 +0000 (-0700)
Subject: Make sure pixel sizes are zero when setting window size for ptys.
X-Git-Tag: emacs-27.1.90~92
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=da6234e2df;p=emacs.git

Make sure pixel sizes are zero when setting window size for ptys.

* sysdep.c (set_window_size): Initialize data to zero to avoid
passing any garbage from the stack to ioctl.
---

diff --git a/src/sysdep.c b/src/sysdep.c
index cb2f7f2f23c..addaf4dc28a 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -1447,6 +1447,7 @@ set_window_size (int fd, int height, int width)
 
   /* BSD-style.  */
   struct winsize size;
+  memset (&size, 0, sizeof (size));
   size.ws_row = height;
   size.ws_col = width;
 
@@ -1457,6 +1458,7 @@ set_window_size (int fd, int height, int width)
 
   /* SunOS - style.  */
   struct ttysize size;
+  memset (&size, 0, sizeof (size));
   size.ts_lines = height;
   size.ts_cols = width;