From f69e0d314fe2ab3e2456441b593f4f154dba1026 Mon Sep 17 00:00:00 2001
From: "Justin M. Keyes" <justinkz@gmail.com>
Date: Sun, 11 Feb 2018 16:44:00 +0100
Subject: vim-patch:8.0.0975: using freed memory when setting 'backspace'

Problem:    Using freed memory when setting 'backspace'.
Solution:   When changing oldval also change origval.

https://github.com/vim/vim/commit/edbc0d46cffe1766d0b330dc2842212cff644f8e
---
 src/nvim/option.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/nvim/option.c b/src/nvim/option.c
index 7195ef58ac..b0e0d01504 100644
--- a/src/nvim/option.c
+++ b/src/nvim/option.c
@@ -1584,6 +1584,9 @@ do_set (
                   break;
                 }
                 xfree(oldval);
+                if (origval == oldval) {
+                  origval = *(char_u **)varp;
+                }
                 oldval = *(char_u **)varp;
               }
               /*
-- 
cgit