From 9db87533616ffd5dcd7a912a6ca24e693c428d2a Mon Sep 17 00:00:00 2001
From: greg <greg7mdp@gmail.com>
Date: Mon, 28 Feb 2022 15:04:54 -0500
Subject: [PATCH] better feature testing by using language feature macro - 
 issue #132

---
 parallel_hashmap/phmap_base.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/parallel_hashmap/phmap_base.h b/parallel_hashmap/phmap_base.h
index 6b9ea9e..96ce11c 100644
--- a/parallel_hashmap/phmap_base.h
+++ b/parallel_hashmap/phmap_base.h
@@ -329,7 +329,7 @@ template <typename T>
 using underlying_type_t = typename std::underlying_type<T>::type;
 
 template< class F, class... ArgTypes>
-#if PHMAP_HAVE_CC17
+#ifdef __cpp_lib_result_of_sfinae
     using invoke_result_t = typename std::invoke_result_t<F, ArgTypes...>;
 #else
     using invoke_result_t = typename std::result_of<F(ArgTypes...)>::type;