[2096] Document naming intention

diff --git a/src/lib/datasrc/memory/rdata_serialization_priv.cc b/src/lib/datasrc/memory/rdata_serialization_priv.cc
index 23bdf53fcdb843147855e3e9d67a5617f380bbec..2974079fa2ea74a4f08fc95e21cc0e9b3f7d75ed 100644 (file)
--- a/src/lib/datasrc/memory/rdata_serialization_priv.cc
+++ b/src/lib/datasrc/memory/rdata_serialization_priv.cc
@@ -14,7 +14,8 @@
 
 // This file is directly included from the rdata_serialization.cc. It would
 // be part of the file if we didn't need to steal some definitions from here
-// for the tests (which include it too).
+// for the tests (which include it too). To make the intent clear, it is
+// named .cc, not .h.
 
 struct RdataFieldSpec {
     enum FieldType {