...

net/adc_netproto.h

@@ -108,7 +108,7 @@ struct AdcStopSeqSessionProto {
     template <traits::adc_input_char_range R>
     auto fromProto(const R& r)
     {
-        auto N = std::distance(r.begin(), r.end());
+        size_t N = std::distance(r.begin(), r.end());
 
         if (N < STOP_SEQ_SIZE) {  // one must ensure for input range size correctness
             // return std::span<std::ranges::range_value_t<R>>();