diff --git a/src/memory.hh b/src/memory.hh
index 163dd76c..3c45f392 100644
--- a/src/memory.hh
+++ b/src/memory.hh
@@ -132,7 +132,7 @@ bool operator!=(const Allocator<T1, d1>& lhs, const Allocator<T2, d2>& rhs)
 template<typename T>
 struct TypeDomain
 {
-    static constexpr MemoryDomain domain = TypeDomain::helper((T*)nullptr);
+    static constexpr MemoryDomain domain() { return TypeDomain<T>::helper((T*)nullptr); }
 private:
     template<typename U> static decltype(U::Domain) constexpr helper(U*) { return U::Domain; }
     static constexpr MemoryDomain helper(...) { return MemoryDomain::Undefined; }
@@ -141,16 +141,21 @@ private:
 template<MemoryDomain d>
 struct UseMemoryDomain
 {
-    static constexpr MemoryDomain domain = d;
+    static constexpr MemoryDomain Domain = d;
     static void* operator new(size_t size)
     {
-        on_alloc(domain, size);
+        on_alloc(Domain, size);
         return ::operator new(size);
     }
 
+    static void* operator new(size_t size, void* ptr)
+    {
+        return ::operator new(size, ptr);
+    }
+
     static void operator delete(void* ptr, size_t size)
     {
-        on_dealloc(domain, size);
+        on_dealloc(Domain, size);
         ::operator delete(ptr);
     }
 };
diff --git a/src/unordered_map.hh b/src/unordered_map.hh
index 2c54a0da..13246fac 100644
--- a/src/unordered_map.hh
+++ b/src/unordered_map.hh
@@ -9,7 +9,7 @@
 namespace Kakoune
 {
 
-template<typename Key, typename Value, MemoryDomain domain = TypeDomain<Key>::domain>
+template<typename Key, typename Value, MemoryDomain domain = TypeDomain<Key>::domain()>
 using UnorderedMap = std::unordered_map<Key, Value, Hash<Key>, std::equal_to<Key>,
                                         Allocator<std::pair<const Key, Value>, domain>>;
 
diff --git a/src/vector.hh b/src/vector.hh
index db137b24..c8cc9d08 100644
--- a/src/vector.hh
+++ b/src/vector.hh
@@ -8,7 +8,7 @@
 namespace Kakoune
 {
 
-template<typename T, MemoryDomain domain = TypeDomain<T>::domain>
+template<typename T, MemoryDomain domain = TypeDomain<T>::domain()>
 using Vector = std::vector<T, Allocator<T, domain>>;
 
 }