===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mg/line.c,v
retrieving revision 1.61
retrieving revision 1.62
diff -u -r1.61 -r1.62
--- src/usr.bin/mg/line.c	2018/08/29 07:50:16	1.61
+++ src/usr.bin/mg/line.c	2020/07/22 13:22:53	1.62
@@ -1,4 +1,4 @@
-/*	$OpenBSD: line.c,v 1.61 2018/08/29 07:50:16 reyk Exp $	*/
+/*	$OpenBSD: line.c,v 1.62 2020/07/22 13:22:53 tb Exp $	*/
 
 /* This file is in the public domain. */
 
@@ -556,6 +556,8 @@
 		goto done;
 
 	lp = curwp->w_dotp;
+	if (ltext(lp) == NULL)
+		goto done;
 	doto = curwp->w_doto;
 	n = plen;