An empty string indicates there is no NXTNUM().

Fixes segfault in -e if you happen to delete everything after
a partition line's ":".

diff --git a/sbin/disklabel/disklabel.c b/sbin/disklabel/disklabel.c
index f419d67..7149983 100644 (file)
--- a/sbin/disklabel/disklabel.c
+++ b/sbin/disklabel/disklabel.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: disklabel.c,v 1.253 2023/07/03 08:16:36 krw Exp $     */
+/*     $OpenBSD: disklabel.c,v 1.254 2023/07/03 15:27:07 krw Exp $     */
 
 /*
  * Copyright (c) 1987, 1993
@@ -921,7 +921,7 @@ getasciilabel(FILE *f, struct disklabel *lp)
                        }
                        pp = &lp->d_partitions[part];
 #define NXTNUM(n, field, errstr) {                                     \
-       if (tp == NULL) {                                               \
+       if (tp == NULL || *tp == '\0') {                                \
                warnx("line %d: too few fields", lineno);               \
                errors++;                                               \
                break;                                                  \