From b25e5449c87f206e18a7049945bb847271200aa5 Mon Sep 17 00:00:00 2001
From: SChernykh <sergey.v.chernykh@gmail.com>
Date: Sun, 26 Jun 2022 17:07:19 +0200
Subject: [PATCH] Fixed rare "low diff share" errors

---
 src/stratum_server.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/stratum_server.cpp b/src/stratum_server.cpp
index 56e1f40..04bc1d1 100644
--- a/src/stratum_server.cpp
+++ b/src/stratum_server.cpp
@@ -388,7 +388,8 @@ bool StratumServer::on_submit(StratumClient* client, uint32_t id, const char* jo
 		}
 
 		if (target >= TARGET_4_BYTES_LIMIT) {
-			target = (target >> 32) << 32;
+			// "Low diff share" fix: adjust target to the same value as XMRig would use
+			target = std::numeric_limits<uint64_t>::max() / (std::numeric_limits<uint32_t>::max() / (target >> 32));
 		}
 
 		share->m_req.data = share;