I believe this fixes an alignment issue.

Casting the uint8_t array to a uint32_t pointer may cause it to become misaligned. So making it alignas a uint32 array should remove the undefined behavior.

include/uuid.h

@@ -732,7 +732,7 @@ namespace uuids
 
       uuid operator()()
       {
-         uint8_t bytes[16];
+         alignas(uint32_t) uint8_t bytes[16];
          for (int i = 0; i < 16; i += 4)
             *reinterpret_cast<uint32_t*>(bytes + i) = distribution(*generator);