From c6eb1f42bec06e92c2c5ee9a523af4e46ac05083 Mon Sep 17 00:00:00 2001
From: Abdelhakeem Osama <abdelhakeem.osama@hotmail.com>
Date: Thu, 22 Aug 2019 11:07:54 +0300
Subject: API: fix nvim_command_output buffer overflow (#10830)

Fixes https://github.com/neovim/neovim/issues/10829.
---
 src/nvim/api/vim.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/nvim/api/vim.c b/src/nvim/api/vim.c
index 6280038d1a..d027eca59a 100644
--- a/src/nvim/api/vim.c
+++ b/src/nvim/api/vim.c
@@ -364,7 +364,7 @@ String nvim_command_output(String command, Error *err)
     };
     // redir usually (except :echon) prepends a newline.
     if (s.data[0] == '\n') {
-      memmove(s.data, s.data + 1, s.size);
+      memmove(s.data, s.data + 1, s.size - 1);
       s.data[s.size - 1] = '\0';
       s.size = s.size - 1;
     }
-- 
cgit