Add test_reference.cpp

src/reference.hpp

@@ -385,9 +385,14 @@ template <typename T, typename... Args> Ref<T> make_ref(Args &&...args) {
   constexpr size_t padded_cb_size =
       (cb_size + alignment - 1) & ~(alignment - 1);
 
+  constexpr size_t total_alignment =
+      std::max(alignof(detail::ControlBlock), alignment);
+  constexpr size_t total_size = padded_cb_size + sizeof(T);
+  constexpr size_t aligned_total_size =
+      (total_size + total_alignment - 1) & ~(total_alignment - 1);
+
   char *buf = reinterpret_cast<char *>(
-      std::aligned_alloc(std::max(alignof(detail::ControlBlock), alignment),
-                         padded_cb_size + sizeof(T)));
+      std::aligned_alloc(total_alignment, aligned_total_size));
   if (!buf) {
     std::fprintf(stderr, "Out of memory\n");
     std::abort();