patch 8.2.1561: using NULL pointers in fold code Commit: https://github.com/vim/vim/commit/81fcb67fb32a12414512b72e691a1bbbff9f8511 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Sep 1 21:21:24 2020 +0200 patch 8.2.1561: using NULL pointers in fold code Problem: Using NULL pointers in fold code. Solution: Avoid using a NULL pointer. (Dominique Pell?, closes https://github.com/vim/vim/issues/6831, closes #6831)

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}\")