commit https://github.com/vim/vim/commit/1b58cdd160c2e0ada0f638679a2aa27e4665fc48 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Aug 22 23:04:33 2016 +0200 patch 7.4.2243 Problem: Warning for assigning negative value to unsigned. (Danek Duvall) Solution: Make cterm_normal_fg_gui_color and _bg_ guicolor_T, cast to long_u only when an unsigned is needed.