patch 8.0.0636: when reading the undo file fails may use uninitialized data commit https://github.com/vim/vim/commit/56f2db562ddc6c69026d55360f0cfaacd8adc26a Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jun 11 23:09:15 2017 +0200 patch 8.0.0636: when reading the undo file fails may use uninitialized data Problem: When reading the undo file fails may use uninitialized data. Solution: Always clear the buffer on failure.

README_src.txt for version 8.0 of Vim: Vi IMproved.

The source archive contains the files needed to compile Vim on Unix systems.
It is packed for Unix systems (NL line separator).

For more information, see the README.txt file that comes with the runtime
archive (vim-8.0-rt.tar.gz).  To be able to run Vim you MUST get the runtime
archive too!