From 1c14bc1215e39a2a1918892c80adce819f4072e4 Mon Sep 17 00:00:00 2001
From: Christian Mazakas <christian.mazakas@gmail.com>
Date: Wed, 12 Oct 2022 13:39:43 -0700
Subject: [PATCH] Use explicit cast for when KeyEqual returns a size_t type

---
 include/boost/unordered/detail/foa.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/unordered/detail/foa.hpp b/include/boost/unordered/detail/foa.hpp
index dfa99753..614654a3 100644
--- a/include/boost/unordered/detail/foa.hpp
+++ b/include/boost/unordered/detail/foa.hpp
@@ -1381,7 +1381,7 @@ private:
         prefetch_elements(p);
         do{
           auto n=unchecked_countr_zero(mask);
-          if(BOOST_LIKELY(pred()(x,key_from(p[n])))){
+          if(BOOST_LIKELY(static_cast<bool>(pred()(x,key_from(p[n]))))){
             return {pg,n,p+n};
           }
           mask&=mask-1;