diff --git a/include/xtensor/xutils.hpp b/include/xtensor/xutils.hpp
index 21c452489..46929cb84 100644
--- a/include/xtensor/xutils.hpp
+++ b/include/xtensor/xutils.hpp
@@ -807,12 +807,12 @@ namespace xt
{
using base_type = A;
using value_type = typename A::value_type;
- using reference = typename A::reference;
- using const_reference = typename A::const_reference;
- using pointer = typename A::pointer;
- using const_pointer = typename A::const_pointer;
- using size_type = typename A::size_type;
- using difference_type = typename A::difference_type;
+ using reference = value_type&;
+ using const_reference = const value_type&;
+ using pointer = typename std::allocator_traits::pointer;
+ using const_pointer = typename std::allocator_traits::const_pointer;
+ using size_type = typename std::allocator_traits::size_type;
+ using difference_type = typename std::allocator_traits::difference_type;
tracking_allocator() = default;
@@ -835,9 +835,13 @@ namespace xt
return base_type::allocate(n);
}
- using base_type::construct;
using base_type::deallocate;
+
+// Construct and destroy are removed in --std=c++-20
+#if ((defined(__cplusplus) && __cplusplus < 202002L) || (defined(_MSVC_LANG) && _MSVC_LANG < 202002L))
+ using base_type::construct;
using base_type::destroy;
+#endif
template
struct rebind
diff --git a/test/test_xbuffer_adaptor.cpp b/test/test_xbuffer_adaptor.cpp
index f58e54620..7af7ad2cd 100644
--- a/test/test_xbuffer_adaptor.cpp
+++ b/test/test_xbuffer_adaptor.cpp
@@ -76,9 +76,9 @@ namespace xt
{
public:
- size_t* allocate(size_t n, const void* hint = 0)
+ size_t* allocate(size_t n)
{
- size_t* res = std::allocator::allocate(n, hint);
+ size_t* res = std::allocator::allocate(n);
// store the size into the result so we can
// check if the size is correct when we deallocate.
res[0] = n;