Merge #20056: net: Use Span in ReceiveMsgBytes

fa5ed3b4ca609426b2622cad235e107d33db7b30 net: Use Span in ReceiveMsgBytes (MarcoFalke)

Pull request description:

  Pass a data pointer and a size as span in `ReceiveMsgBytes` to get the benefits of a span

ACKs for top commit:
  jonatack:
    ACK fa5ed3b4ca609426b2622cad235e107d33db7b30 code review, rebased to current master 12a1c3ad1a43634, debug build, unit tests, ran bitcoind/-netinfo/getpeerinfo
  theStack:
    ACK fa5ed3b4ca609426b2622cad235e107d33db7b30

Tree-SHA512: 89bf111323148d6e6e50185ad20ab39f73ab3a58a27e46319e3a08bcf5dcf9d6aa84faff0fd6afb90cb892ac2f557a237c144560986063bc736a69ace353ab9d

1 files changed, 3 insertions, 6 deletions

diff --git a/src/test/fuzz/p2p_transport_deserializer.cpp b/src/test/fuzz/p2p_transport_deserializer.cpp
index 7e216e16fe..3feabcc99a 100644
--- a/src/test/fuzz/p2p_transport_deserializer.cpp
+++ b/src/test/fuzz/p2p_transport_deserializer.cpp
@@ -21,15 +21,12 @@ void test_one_input(const std::vector<uint8_t>& buffer)
 {
     // Construct deserializer, with a dummy NodeId
     V1TransportDeserializer deserializer{Params(), (NodeId)0, SER_NETWORK, INIT_PROTO_VERSION};
-    const char* pch = (const char*)buffer.data();
-    size_t n_bytes = buffer.size();
-    while (n_bytes > 0) {
-        const int handled = deserializer.Read(pch, n_bytes);
+    Span<const char> msg_bytes{(const char*)buffer.data(), buffer.size()};
+    while (msg_bytes.size() > 0) {
+        const int handled = deserializer.Read(msg_bytes);
         if (handled < 0) {
             break;
         }
-        pch += handled;
-        n_bytes -= handled;
         if (deserializer.Complete()) {
             const std::chrono::microseconds m_time{std::numeric_limits<int64_t>::max()};
             uint32_t out_err_raw_size{0};