patch 8.2.2464: using freed memory if window closed in autocommand Commit: https://github.com/vim/vim/commit/8ab375706e6712308f8cf7529bcae56684a6f385 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Feb 3 21:56:59 2021 +0100 patch 8.2.2464: using freed memory if window closed in autocommand Problem: Using freed memory if window closed in autocommand. (houyunsong) Solution: Check the window still exists.

TYPEMAP
VIWIN	T_VIOBJNOMUNGE
VIBUF	T_VIOBJNOMUNGE

INPUT
T_VIOBJNOMUNGE
	if (sv_isa($arg, \"${ntype}\")) {
	    IV tmp = SvIV((SV*)SvRV($arg));
	    $var = INT2PTR($type, tmp);
	    if (!tmp)
		croak(\"$ntype no longer exists\");
	}
	else
	    croak(\"$var is not of type ${ntype}\")