diff -ru nano-4.5-original/nano-4.5/src/files.c nano-4.5/src/files.c
--- nano-4.5-original/nano-4.5/src/files.c	2019-10-04 04:38:05.000000000 -0500
+++ nano-4.5/src/files.c	2019-11-13 02:17:33.268207958 -0600
@@ -31,6 +31,7 @@
 #include <unistd.h>
 
 #define LOCKBUFSIZE 8192
+#define P_tmpdir        "/tmp"
 
 /* Verify that the containing directory of the given filename exists. */
 bool has_valid_path(const char *filename)