3 files changed, 15 insertions, 14 deletions
diff --git a/src/LibC++/defines.h b/src/LibC++/defines.h
index 9293bc2..6aac009 100644
--- a/src/LibC++/defines.h
+++ b/src/LibC++/defines.h
@@ -73,4 +73,9 @@ typedef union double_cast {
   double f;
 } __ATTRIBUTE(packed) double_cast_t;
 
+namespace std {
+struct placement_t;
+struct nothrow_t;
+}  // namespace std
+
 #endif /* __NECTI_DEFINES_H__ */
diff --git a/src/LibC++/filesystem.h b/src/LibC++/filesystem.h
index 807ab0d..4627c50 100644
--- a/src/LibC++/filesystem.h
+++ b/src/LibC++/filesystem.h
@@ -9,8 +9,6 @@
 
 #include <LibC++/defines.h>
 
-/// @brief Filesystem module for LibC++
-
 namespace std {
 class path;
 class filesystem_error;
diff --git a/src/LibC++/new.h b/src/LibC++/new.h
index 37e2a26..27c8159 100644
--- a/src/LibC++/new.h
+++ b/src/LibC++/new.h
@@ -9,27 +9,25 @@
 #include <LibC++/defines.h>
 
 namespace std {
-struct placement_new;
-
-/// =========================================================
-/// @brief Disambugate non-throwing allocation functions.
-/// =========================================================
-struct nothrow_t {
+struct nothrow_t final {
   explicit nothrow_t() = default;
+  ~nothrow_t() = default;
 };
 
-/// =========================================================
-/// @brief Placement new metadata.
-/// =========================================================
-struct placement_new final {
+struct placement_t final {
+  explicit placement_t() = default;
+  ~placement_t() = default;
+
   void*   __base{};
   int32_t __align{};
   size_t  __size{};
 };
-
-using placement_new_t = placement_new;
 }  // namespace std
 
+#ifndef __has_placement
+#define placement
+#endif
+
 void* operator new(size_t);
 void* operator new[](size_t);