patch 8.2.1030: reducing size of a terminal window may cause a crash Commit: https://github.com/vim/vim/commit/da58134eedf43ae4b9013c93ecbdf55e4da4b8a3 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jun 21 17:57:32 2020 +0200 patch 8.2.1030: reducing size of a terminal window may cause a crash Problem: Reducing size of a terminal window may cause a crash. Solution: Make sure the row and column don't become negative. (closes https://github.com/vim/vim/issues/6273)

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}\")