Merge pull request #4 from BillyDonahue/changes

doc: BOOST_HASH_SPECIALIZE_REF passes by const ref

doc/changes.qbk

@@ -174,4 +174,9 @@
 * Ongoing work on improving `hash_combine`. This changes the combine function
   which was previously defined in the reference documentation.
 
+[h2 Boost 1.58.0]
+
+* Fixed strict aliasing violation
+  ([@https://github.com/boostorg/functional/pull/3 GitHub #3]).
+
 [endsect]

include/boost/functional/hash/detail/hash_float.hpp

@@ -68,7 +68,7 @@ namespace boost
             std::size_t seed = 0;
 
             if (length >= sizeof(std::size_t)) {
-                seed = *(std::size_t*) ptr;
+                std::memcpy(&seed, ptr, sizeof(std::size_t));
                 length -= sizeof(std::size_t);
                 ptr += sizeof(std::size_t);
 

include/boost/functional/hash/hash.hpp

@@ -411,7 +411,7 @@ namespace boost
     // passed by copy.
     //
     // BOOST_HASH_SPECIALIZE_REF - define a specialization for a type which is
-    // passed by copy.
+    // passed by const reference.
     //
     // These are undefined later.