From 812037cb80f72096738cf2b0c15b39536c6c1e24 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter@wuille.net>
Date: Thu, 10 Sep 2020 00:21:52 -0700
Subject: [PATCH] Change CSipHasher's count variable to uint8_t

---
 src/crypto/siphash.cpp | 2 +-
 src/crypto/siphash.h   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/crypto/siphash.cpp b/src/crypto/siphash.cpp
index e81957111a..2e0106b165 100644
--- a/src/crypto/siphash.cpp
+++ b/src/crypto/siphash.cpp
@@ -49,7 +49,7 @@ CSipHasher& CSipHasher::Write(const unsigned char* data, size_t size)
 {
     uint64_t v0 = v[0], v1 = v[1], v2 = v[2], v3 = v[3];
     uint64_t t = tmp;
-    int c = count;
+    uint8_t c = count;
 
     while (size--) {
         t |= ((uint64_t)(*(data++))) << (8 * (c % 8));
diff --git a/src/crypto/siphash.h b/src/crypto/siphash.h
index b312f913f9..6b38950f8e 100644
--- a/src/crypto/siphash.h
+++ b/src/crypto/siphash.h
@@ -15,7 +15,7 @@ class CSipHasher
 private:
     uint64_t v[4];
     uint64_t tmp;
-    int count;
+    uint8_t count; // Only the low 8 bits of the input size matter.
 
 public:
     /** Construct a SipHash calculator initialized with 128-bit key (k0, k1) */