patch 8.2.3902: Vim9: double free with nested :def function Commit: https://github.com/vim/vim/commit/9c23f9bb5fe435b28245ba8ac65aa0ca6b902c04 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Dec 26 14:23:22 2021 +0000 patch 8.2.3902: Vim9: double free with nested :def function Problem: Vim9: double free with nested :def function. Solution: Pass "line_to_free" from compile_def_function() and make sure cmdlinep is valid.

/^CFLAGS[[:blank:]]*=/s/$/ -Wall -Wextra -Wshadow -Werror/
/^PERL_CFLAGS[[:blank:]]*=/s/$/ -Wno-error=unused-function/