report ambiguous overload only in verbose mode

alib2common/src/abstraction/AlgorithmRegistry.cpp

@@ -133,7 +133,8 @@ std::shared_ptr < abstraction::OperationAbstraction > AlgorithmRegistry::getAbst
 //		throw exception::CommonException ( "Entry overload " + ss.str ( ) + " ambiguous." ); FIXME make better overload select algorithm
 		best = compatibilityData [ * winner.begin ( ) ].second.second;
-		common::Streams::err << "Entry overload " + ss.str ( ) + " ambiguous. First selected." << std::endl;
+		if(common::GlobalData::verbose)
+			common::Streams::err << "Entry overload " + ss.str ( ) + " ambiguous. First selected." << std::endl;
 	} else {
 		std::stringstream ss;
 		ss << paramTypes;