From 4c66b689c3530ae579f78a0a8930bcc6d05d87ef Mon Sep 17 00:00:00 2001
From: Ilya Kolpakov <ilya.kolpakov@gmail.com>
Date: Wed, 6 Jun 2018 16:24:25 +0200
Subject: [PATCH] fix serialization of empty names in mm_idx_dump

---
 index.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/index.c b/index.c
index 201870a..a8b6035 100644
--- a/index.c
+++ b/index.c
@@ -420,8 +420,7 @@ void mm_idx_dump(FILE *fp, const mm_idx_t *mi)
 	fwrite(MM_IDX_MAGIC, 1, 4, fp);
 	fwrite(x, 4, 5, fp);
 	for (i = 0; i < mi->n_seq; ++i) {
-		uint8_t l;
-		l = strlen(mi->seq[i].name);
+		uint8_t l = mi->seq[i].name ? strlen(mi->seq[i].name) : 0;
 		fwrite(&l, 1, 1, fp);
 		fwrite(mi->seq[i].name, 1, l, fp);
 		fwrite(&mi->seq[i].len, 4, 1, fp);