patch 8.2.3427: double free when list is copied Commit: https://github.com/vim/vim/commit/b3bf33a7b227df871834e816c4ce4b2706b56bea Author: Bram Moolenaar <Bram@vim.org> Date: Sat Sep 11 20:20:38 2021 +0200 patch 8.2.3427: double free when list is copied Problem: Double free when list is copied. Solution: Allocate the type when making a copy. (closes https://github.com/vim/vim/issues/8862) Clear the type for flattennew(). Avoid a memory leak when flattennew() fails.

" Print all interface versions for Ubuntu. Part 1.

if 1
  execute 'source' expand('<sfile>:h') .. '/if_ver-cmd.vim'

  echo "*** Interface versions ***\n"

  echo 'Lua:'
  PrintVer lua print(vim.lua_version, jit and "(LuaJIT)" or "")

  echo 'MzScheme:'
  PrintVer mzscheme (display (version))

  echo 'Perl:'
  PrintVer perl print $^V

  echo 'Ruby:'
  PrintVer ruby print RUBY_VERSION

  echo 'Tcl:'
  PrintVer tcl puts [info patchlevel]

  echo 'Python 2:'
  PrintVer python print sys.version
endif