Index: boost/functional/hash/detail/hash_float.hpp
===================================================================
--- boost/functional/hash/detail/hash_float.hpp (revision 82217)
+++ boost/functional/hash/detail/hash_float.hpp (working copy)
@@ -73,7 +73,9 @@
                 ptr += sizeof(std::size_t);
 
                 while(length >= sizeof(std::size_t)) {
-                    hash_float_combine(seed, *(std::size_t*) ptr);
+                    std::size_t buffer = 0;
+                    std::memcpy(&buffer, ptr, sizeof(std::size_t));
+                    hash_float_combine(seed, buffer);
                     length -= sizeof(std::size_t);
                     ptr += sizeof(std::size_t);
                 }
Index: boost/functional/hash/extensions.hpp
===================================================================
--- boost/functional/hash/extensions.hpp        (revision 82217)
+++ boost/functional/hash/extensions.hpp        (working copy)
@@ -266,6 +266,7 @@
 #if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
         std::size_t operator()(T const& val) const
         {
+            using boost::hash_value;
             return hash_value(val);
         }
 #else