promised YNode const, cast for clang

Author: rengzhengcodes

include/compound-config/compound-config.hpp

@@ -51,7 +51,7 @@ class CompoundConfigNode
   CompoundConfigNode(libconfig::Setting* _lnode, YAML::Node _ynode, CompoundConfig* _cConfig);
 
   libconfig::Setting& getLNode() {return *LNode;}
-  YAML::Node getYNode() {return YNode;}
+  YAML::Node getYNode() {return YNode;} const
 
   /**
    * @brief return compound config node corresponding with `path`.

src/unit-tests/compound-config/test-compound-config.cpp

@@ -351,7 +351,7 @@ bool mapNodeEq( const config::CompoundConfigNode CNode, const YAML::Node YNode,
          * valid child type. */
         default:
             std::cout << "!!! UNIT TEST ERROR !!!" << std::endl;
-            throw std::invalid_argument("YAML type is invalid: " + TYPE);
+            throw std::invalid_argument("YAML type is invalid: " + std::to_string(TYPE));
             break;
     }