From a35b6824f3a0bdb68c5aef599c0f17562689970e Mon Sep 17 00:00:00 2001
From: Jeremy Rubin <j@rubin.io>
Date: Mon, 28 Oct 2019 16:42:39 -0700
Subject: Add assertion to randrange that input is not 0

---
 src/random.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/random.h b/src/random.h
index 22801ec155..9d1f751773 100644
--- a/src/random.h
+++ b/src/random.h
@@ -166,6 +166,7 @@ public:
     /** Generate a random integer in the range [0..range). */
     uint64_t randrange(uint64_t range) noexcept
     {
+        assert(range);
         --range;
         int bits = CountBits(range);
         while (true) {
-- 
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