Implement allocator access utilities

test/allocator_rebind_test.cpp

@@ -0,0 +1,30 @@
+/*
+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/is_same.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<class, class, class>
+struct A1 { };
+
+template<class, class U, class V>
+struct A2 {
+    template<class T>
+    struct rebind {
+        typedef A1<T, U, V> other;
+    };
+};
+
+int main()
+{
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<A1<bool, int, float>,
+        boost::allocator_rebind<A1<char, int, float>, bool>::type>));
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<A1<bool, int, float>,
+        boost::allocator_rebind<A2<char, int, float>, bool>::type>));
+    return boost::report_errors();
+}