Implement allocator access utilities

test/allocator_deallocate_test.cpp

@@ -0,0 +1,31 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+struct A {
+    typedef int* pointer;
+    typedef int size_type;
+
+    A()
+        : value() { }
+
+    void deallocate(pointer, size_type n) {
+        value = n;
+    }
+
+    size_type value;
+};
+
+int main()
+{
+    A a;
+    boost::allocator_deallocate(a, 0, 5);
+    BOOST_TEST_EQ(a.value, 5);
+    return boost::report_errors();
+}