u_long -> off_t, I missed the big endian case. From Juergen Hannken-Illjes

sys/compat/common/vfs_syscalls_43.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: vfs_syscalls_43.c,v 1.6 1997/10/10 01:47:04 fvdl Exp $	*/
+/*	$NetBSD: vfs_syscalls_43.c,v 1.7 1997/10/10 13:03:32 fvdl Exp $	*/
 
 /*
  * Copyright (c) 1989, 1993
@@ -370,7 +370,7 @@ unionread:
 #	if (BYTE_ORDER != LITTLE_ENDIAN)
 		if (vp->v_mount->mnt_maxsymlinklen <= 0) {
 			error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag,
-			    (u_long *)0, 0);
+			    (off_t *)0, 0);
 			fp->f_offset = auio.uio_offset;
 		} else
 #	endif