Fixes #199 ("Apply LWG issue 3471")

doc/container.qbk

@@ -1342,6 +1342,7 @@ use [*Boost.Container]? There are several reasons for that:
 
 * The library now compiles without warnings with GCC's -Wcast-align=strict
 * Fixed bugs/issues:
+   * [@https://github.com/boostorg/container/issues/199    GitHub #199: ['"Apply LWG issue 3471 to memory_resource"]].
    * [@https://github.com/boostorg/container/issues/206    GitHub #206: ['"operator-> on static_vector::iterator causes cast alignment warning"]].
 
 [endsect]

include/boost/container/pmr/memory_resource.hpp

@@ -19,6 +19,7 @@
 #include <boost/container/detail/workaround.hpp>
 #include <boost/container/container_fwd.hpp>
 #include <boost/move/detail/type_traits.hpp>
+#include <boost/container/detail/placement_new.hpp>
 #include <cstddef>
 
 namespace boost {
@@ -41,7 +42,11 @@ class memory_resource
    //! <b>Effects</b>: Equivalent to
    //! `return do_allocate(bytes, alignment);`
    void* allocate(std::size_t bytes, std::size_t alignment = max_align)
-   {  return this->do_allocate(bytes, alignment);  }
+   {  
+      //Obtain a pointer to enough storage and initialize the lifetime 
+      //of an array object of the given size in the address
+      return ::operator new(bytes, this->do_allocate(bytes, alignment), boost_container_new_t());
+   }
 
    //! <b>Effects</b>: Equivalent to
    //! `return do_deallocate(bytes, alignment);`