From a48a3ac07bdcfe499e3fc9181b60583874bd4a17 Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Tue, 5 Sep 2023 00:39:44 +0100
Subject: [PATCH] Fix 87911bdf: Fix FindLastBit for unsigned long long (uint64
 on Windows)

See: #594
---
 src/core/bitmath_func.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/bitmath_func.hpp b/src/core/bitmath_func.hpp
index bf7e64dad1..ab0d642bbc 100644
--- a/src/core/bitmath_func.hpp
+++ b/src/core/bitmath_func.hpp
@@ -258,7 +258,7 @@ static inline uint8 FindLastBit(T value)
 	} else if (sizeof(T) == sizeof(unsigned long)) {
 		return __builtin_clzl(1) - __builtin_clzl(unsigned_value);
 	} else {
-		return __builtin_clzll(1) - __builtin_ctzll(unsigned_value);
+		return __builtin_clzll(1) - __builtin_clzll(unsigned_value);
 	}
 #else
 	extern uint8 FindLastBit64(uint64 x);