# HG changeset patch
# User Bram Moolenaar <bram@vim.org>
# Date 1405521028 -7200
# Node ID 72ee0db83788638c36bbcb076cabc2ba6c8cd4e7
# Parent  f37b2f0479ca4c41b70159f786cab84bc21ed1ce
updated for version 7.4.369
Problem:    Using freed memory when exiting while compiled with EXITFREE.
Solution:   Set curwin to NULL and check for that. (Dominique Pelle)

diff --git a/src/buffer.c b/src/buffer.c
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -5702,8 +5702,8 @@ buf_delete_signs(buf)
     signlist_T	*next;
 
     /* When deleting the last sign need to redraw the windows to remove the
-     * sign column. */
-    if (buf->b_signlist != NULL)
+     * sign column. Not when curwin is NULL (this means we're exiting). */
+    if (buf->b_signlist != NULL && curwin != NULL)
     {
 	redraw_buf_later(buf, NOT_VALID);
 	changed_cline_bef_curs();
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -735,6 +735,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    369,
+/**/
     368,
 /**/
     367,
diff --git a/src/window.c b/src/window.c
--- a/src/window.c
+++ b/src/window.c
@@ -2489,6 +2489,10 @@ win_free_all()
 
     while (firstwin != NULL)
 	(void)win_free_mem(firstwin, &dummy, NULL);
+
+    /* No window should be used after this. Set curwin to NULL to crash
+     * instead of using freed memory. */
+    curwin = NULL;
 }
 #endif