Fix Coverity issues

Change-Id: I488696b437817ae23707e4f92305d83fe1943919

diff --git a/src/service/src/tuple_hash.hpp b/src/service/src/tuple_hash.hpp
index a712ac95ba30175a1171077bbbfbebbc0d60d761..201482ca011578c6df260d4c7ab9d5cd4c2c119c 100644 (file)
--- a/src/service/src/tuple_hash.hpp
+++ b/src/service/src/tuple_hash.hpp
@@ -27,10 +27,10 @@
 template<typename T, size_t I = std::tuple_size<T>::value - 1>
 struct tuple_hash
 {
-       std::size_t operator()(T t) const noexcept
+       std::size_t operator()(T const& t) const noexcept
        {
-               auto v = std::get<I>(t);
-               auto h = std::hash<decltype(v)>{}(v);
+               const auto &v = std::get<I>(t);
+               auto h = std::hash<std::remove_cvref_t<decltype(v)>>{}(v);
                auto h1 = tuple_hash<T, I - 1>{}(t);
                return h ^ h1 << 1;
        }
@@ -39,10 +39,10 @@ struct tuple_hash
 template<typename T>
 struct tuple_hash<T, 0>
 {
-       std::size_t operator()(T t) const noexcept
+       std::size_t operator()(T const& t) const noexcept
        {
-               auto v = std::get<0>(t);
-               auto h = std::hash<decltype(v)>{}(v);
+               const auto &v = std::get<0>(t);
+               auto h = std::hash<std::remove_cvref_t<decltype(v)>>{}(v);
                return h;
        }
 };