patch 9.0.1076: ASAN complains about NULL argument Commit: https://github.com/vim/vim/commit/8efdcee02ed02cf9e51e1757441715c2479757ee Author: Bram Moolenaar <Bram@vim.org> Date: Mon Dec 19 12:18:09 2022 +0000 patch 9.0.1076: ASAN complains about NULL argument Problem: ASAN complains about NULL argument. Solution: Skip memmove() when there is nothing to move.

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}\")