From 9f934223b2051bd5aa5c97fa0bf9eb777a711e90 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 16 Oct 2018 23:35:22 +0900
Subject: [PATCH] prioq: add one more assertion

---
 src/basic/prioq.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/basic/prioq.c b/src/basic/prioq.c
index e816b2c62a5..1e4d8d1b2f9 100644
--- a/src/basic/prioq.c
+++ b/src/basic/prioq.c
@@ -88,6 +88,7 @@ static void swap(Prioq *q, unsigned j, unsigned k) {
 
 static unsigned shuffle_up(Prioq *q, unsigned idx) {
         assert(q);
+        assert(idx < q->n_items);
 
         while (idx > 0) {
                 unsigned k;
-- 
2.47.3