patch 9.0.0224: Using NULL pointer when skipping compiled code Commit: https://github.com/vim/vim/commit/4875d6ab068f09df88d24d81de40dcd8d56e243d Author: Bram Moolenaar <Bram@vim.org> Date: Wed Aug 17 15:55:51 2022 +0100 patch 9.0.0224: Using NULL pointer when skipping compiled code Problem: Using NULL pointer when skipping compiled code. Solution: Check for skipping.

" Vim compiler file
" Compiler:     ATT dot
" Maintainer:	Marcos Macedo <bar4ka@bol.com.br>
" Last Change:	2004 May 16

if exists("current_compiler")
  finish
endif
let current_compiler = "dot"

if exists(":CompilerSet") != 2		" older Vim always used :setlocal
  command -nargs=* CompilerSet setlocal <args>
endif

CompilerSet makeprg=dot\ -T$*\ \"%:p\"\ -o\ \"%:p:r.$*\"