commit 4e036c9e6f61ac9fca7be561da0a04d6fc36f9b8
author Bram Moolenaar <Bram@vim.org> Wed Jul 16 16:30:28 2014 +0200
committer Bram Moolenaar <Bram@vim.org> Wed Jul 16 16:30:28 2014 +0200
tree db63d06f6b63fc178d25da66b5b40a1f40682116
parent b643e777824c76034cbd8e77f603a0b98f2b26fb

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)

src/window.c

diff --git a/src/window.c b/src/window.c
index cbf0ff8..de85739 100644
--- a/src/window.c
+++ b/src/window.c
@@ -2489,6 +2489,10 @@
 
     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