[oneDPL][ranges][tuple] + a fix for the internal tuple default constr…

…uctor.
uxlfoundation · Feb 19, 2025 · 11c8521 · 11c8521
1 parent c2156af
commit 11c8521
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/include/oneapi/dpl/pstl/tuple_impl.h b/include/oneapi/dpl/pstl/tuple_impl.h
@@ -273,8 +273,8 @@ map_tuplewrapper(F f, TBig<T...> in, RestTuples... rest)
 template <typename _Tp>
 struct __value_holder
 {
-    __value_holder() : value{} {};
-    //__value_holder() = default;
+    //__value_holder() : value{} {};
+    __value_holder() = default;
     template <typename _Up>
     __value_holder(_Up&& t) : value(::std::forward<_Up>(t))
     {
@@ -419,7 +419,9 @@ struct tuple<T1, T...>
         return get_impl<I>()(::std::move(*this));
     }
 
-    tuple() = default;
+    template<typename _Tp = T1, std::enable_if_t<std::conjunction_v<std::is_default_constructible<_Tp>, 
+                                                 std::is_default_constructible<T>...>, int> = 0>
+    tuple(): holder{}, next{} { }
     tuple(const tuple& other) = default;
     tuple(tuple&& other) = default;
     template <typename _U1, typename... _U, typename = ::std::enable_if_t<(sizeof...(_U) == sizeof...(T))>>