Fixes #210: ("Use sized delete in boost::container::new_allocator...")

include/boost/container/detail/placement_new.hpp

@@ -18,6 +18,8 @@
 #  pragma once
 #endif
 
+#include <cstddef>
+
 struct boost_container_new_t{};
 
 //avoid including <new>

include/boost/container/new_allocator.hpp

@@ -162,8 +162,15 @@ class new_allocator
 
    //!Deallocates previously allocated memory.
    //!Never throws
-   void deallocate(pointer ptr, size_type) BOOST_NOEXCEPT_OR_NOTHROW
-     { ::operator delete((void*)ptr); }
+   void deallocate(pointer ptr, size_type n) BOOST_NOEXCEPT_OR_NOTHROW
+   {
+      (void)n;
+      # if __cpp_sized_deallocation
+      ::operator delete((void*)ptr, n * sizeof(T));
+      #else
+      ::operator delete((void*)ptr);
+      # endif
+   }
 
    //!Returns the maximum number of elements that could be allocated.
    //!Never throws