patch 8.0.0378: possible overflow when reading corrupted undo file commit https://github.com/vim/vim/commit/0c8485f0e4931463c0f7986e1ea84a7d79f10c75 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 26 18:17:10 2017 +0100 patch 8.0.0378: possible overflow when reading corrupted undo file Problem: Another possible overflow when reading corrupted undo file. Solution: Check if allocated size is not too big. (King)