commit https://github.com/vim/vim/commit/908be438794619f10ef7fa25e24e5893b2ae0189 Author: Bram Moolenaar <Bram@vim.org> Date: Tue May 24 10:51:30 2016 +0200 patch 7.4.1834 Problem: Possible crash when conceal is active. Solution: Check for the screen to be valid when redrawing a line.

" Test for assignment

func Test_no_type_checking()
  let v = 1
  let v = [1,2,3]
  let v = {'a': 1, 'b': 2}
  let v = 3.4
  let v = 'hello'
endfunc