diff --git a/include/utils/TypeHelpers.h b/include/utils/TypeHelpers.h
index 64d25c5..6275793 100644
--- a/include/utils/TypeHelpers.h
+++ b/include/utils/TypeHelpers.h
@@ -18,6 +18,8 @@
 #define ANDROID_TYPE_HELPERS_H
 
 #include <new>
+#include <type_traits>
+
 #include <stdint.h>
 #include <string.h>
 #include <sys/types.h>
@@ -178,49 +180,61 @@
     }
 }
 
-template<typename TYPE> inline
-void move_forward_type(TYPE* d, const TYPE* s, size_t n = 1) {
-    if ((traits<TYPE>::has_trivial_dtor && traits<TYPE>::has_trivial_copy) 
-            || traits<TYPE>::has_trivial_move) 
-    {
-        memmove(d,s,n*sizeof(TYPE));
-    } else {
-        d += n;
-        s += n;
-        while (n > 0) {
-            n--;
-            --d, --s;
-            if (!traits<TYPE>::has_trivial_copy) {
-                new(d) TYPE(*s);
-            } else {
-                *d = *s;   
-            }
-            if (!traits<TYPE>::has_trivial_dtor) {
-                s->~TYPE();
-            }
+template<typename TYPE>
+struct use_trivial_move : public std::integral_constant<bool,
+    (traits<TYPE>::has_trivial_dtor && traits<TYPE>::has_trivial_copy)
+    || traits<TYPE>::has_trivial_move
+> {};
+
+template<typename TYPE>
+typename std::enable_if<use_trivial_move<TYPE>::value>::type
+inline
+move_forward_type(TYPE* d, const TYPE* s, size_t n = 1) {
+    memmove(d, s, n*sizeof(TYPE));
+}
+
+template<typename TYPE>
+typename std::enable_if<!use_trivial_move<TYPE>::value>::type
+inline
+move_forward_type(TYPE* d, const TYPE* s, size_t n = 1) {
+    d += n;
+    s += n;
+    while (n > 0) {
+        n--;
+        --d, --s;
+        if (!traits<TYPE>::has_trivial_copy) {
+            new(d) TYPE(*s);
+        } else {
+            *d = *s;
+        }
+        if (!traits<TYPE>::has_trivial_dtor) {
+            s->~TYPE();
         }
     }
 }
 
-template<typename TYPE> inline
-void move_backward_type(TYPE* d, const TYPE* s, size_t n = 1) {
-    if ((traits<TYPE>::has_trivial_dtor && traits<TYPE>::has_trivial_copy) 
-            || traits<TYPE>::has_trivial_move) 
-    {
-        memmove(d,s,n*sizeof(TYPE));
-    } else {
-        while (n > 0) {
-            n--;
-            if (!traits<TYPE>::has_trivial_copy) {
-                new(d) TYPE(*s);
-            } else {
-                *d = *s;   
-            }
-            if (!traits<TYPE>::has_trivial_dtor) {
-                s->~TYPE();
-            }
-            d++, s++;
+template<typename TYPE>
+typename std::enable_if<use_trivial_move<TYPE>::value>::type
+inline
+move_backward_type(TYPE* d, const TYPE* s, size_t n = 1) {
+    memmove(d, s, n*sizeof(TYPE));
+}
+
+template<typename TYPE>
+typename std::enable_if<!use_trivial_move<TYPE>::value>::type
+inline
+move_backward_type(TYPE* d, const TYPE* s, size_t n = 1) {
+    while (n > 0) {
+        n--;
+        if (!traits<TYPE>::has_trivial_copy) {
+            new(d) TYPE(*s);
+        } else {
+            *d = *s;
         }
+        if (!traits<TYPE>::has_trivial_dtor) {
+            s->~TYPE();
+        }
+        d++, s++;
     }
 }
 
@@ -239,6 +253,11 @@
     VALUE   value;
     key_value_pair_t() { }
     key_value_pair_t(const key_value_pair_t& o) : key(o.key), value(o.value) { }
+    key_value_pair_t& operator=(const key_value_pair_t& o) {
+        key = o.key;
+        value = o.value;
+        return *this;
+    }
     key_value_pair_t(const KEY& k, const VALUE& v) : key(k), value(v)  { }
     explicit key_value_pair_t(const KEY& k) : key(k) { }
     inline bool operator < (const key_value_pair_t& o) const {
@@ -275,8 +294,7 @@
 template <typename TKey>
 hash_t hash_type(const TKey& key);
 
-/* Built-in hash code specializations.
- * Assumes pointers are 32bit. */
+/* Built-in hash code specializations */
 #define ANDROID_INT32_HASH(T) \
         template <> inline hash_t hash_type(const T& value) { return hash_t(value); }
 #define ANDROID_INT64_HASH(T) \
@@ -284,7 +302,11 @@
                 return hash_t((value >> 32) ^ value); }
 #define ANDROID_REINTERPRET_HASH(T, R) \
         template <> inline hash_t hash_type(const T& value) { \
-                return hash_type(*reinterpret_cast<const R*>(&value)); }
+            R newValue; \
+            static_assert(sizeof(newValue) == sizeof(value), "size mismatch"); \
+            memcpy(&newValue, &value, sizeof(newValue)); \
+            return hash_type(newValue); \
+        }
 
 ANDROID_INT32_HASH(bool)
 ANDROID_INT32_HASH(int8_t)