patch 8.1.0488: using freed memory in quickfix code commit https://github.com/vim/vim/commit/9f84ded38b62c82a4ee57b54f403b1b185ed8170 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Oct 20 20:54:02 2018 +0200 patch 8.1.0488: using freed memory in quickfix code Problem: Using freed memory in quickfix code. (Dominique Pelle) Solution: Add the quickfix_busy() flag to postpone deleting quickfix lists until it is safe. (Yegappan Lakshmanan, closes #3538)

" Tests for saving/loading a file with some lines ending in
" CTRL-M, some not
func Test_lineending()
  let l = ["this line ends in a\<CR>",
	      \ "this one doesn't",
	      \ "this one does\<CR>",
	      \ "and the last one doesn't"]
  set ta tx
  enew!
  call append(0, l)
  $delete
  write Xfile1
  bwipe Xfile1
  edit Xfile1
  let t = getline(1, '$')
  call assert_equal(l, t)
  new | only
  call delete('Xfile1')
endfunc