commit https://github.com/vim/vim/commit/ffec3c53496d49668669deabc0724ec78e2274fd Author: Bram Moolenaar <Bram@vim.org> Date: Wed Mar 23 20:55:42 2016 +0100 patch 7.4.1640 Problem: Crash when an autocommand changes a quickfix list. (Dominique) Solution: Check wether an entry is still valid. (Yegappan Lakshmanan, Hirohito Higashi)

" Vim script used in test_eval.in.  Needed for script-local function.

func! s:Testje()
  return "foo"
endfunc
let Bar = function('s:Testje')
$put ='s:Testje exists: ' . exists('s:Testje')
$put ='func s:Testje exists: ' . exists('*s:Testje')
$put ='Bar exists: ' . exists('Bar')
$put ='func Bar exists: ' . exists('*Bar')