approach 6

Author: grisumbras

include/boost/json/detail/digest.hpp

@@ -43,9 +43,20 @@ digest(
         hash = (batch ^ hash) * prime;
     }
 
-    std::uint32_t batch = 0;
-    std::memcpy(&batch, s, n);
-    hash = (batch ^ hash) * prime;
+    switch(n)
+    {
+        case 3:
+            hash = (*s++ ^ hash) * prime;
+            // fall through
+        case 2:
+            hash = (*s++ ^ hash) * prime;
+            // fall through
+        case 1:
+            hash = (*s++ ^ hash) * prime;
+            // fall through
+        default:
+            break;
+    }
 
     return hash;
 }