From 523d56a74d994be675da96e3ac02f89b97f69e2e Mon Sep 17 00:00:00 2001
From: greg <greg7mdp@gmail.com>
Date: Sun, 12 May 2019 11:07:39 -0400
Subject: [PATCH] fix issue #10: `has_hash_value` does not work as expected

---
 parallel_hashmap/phmap_utils.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/parallel_hashmap/phmap_utils.h b/parallel_hashmap/phmap_utils.h
index 58dd5b5..96fb6ff 100644
--- a/parallel_hashmap/phmap_utils.h
+++ b/parallel_hashmap/phmap_utils.h
@@ -113,7 +113,7 @@ private:
     typedef std::true_type yes;
     typedef std::false_type no;
 
-    template<typename U> static auto test(int) -> decltype(hash_value(std::declval<U&>()) == 1, yes());
+    template<typename U> static auto test(int) -> decltype(U::hash_value(std::declval<U&>()) == 1, yes());
 
     template<typename> static no test(...);
 
@@ -130,7 +130,7 @@ struct Hash
     template <class U, typename std::enable_if<has_hash_value<U>::value, int>::type = 0>
     size_t _hash(const T& val) const
     {
-        return hash_value(val);
+        return U::hash_value(val);
     }
  
     template <class U, typename std::enable_if<!has_hash_value<U>::value, int>::type = 0>