chunks: declare DiscoverVersion destructor virtual
The concrete subclasses are deleted polymorphically
through a unique_ptr<DiscoverVersion>.
Also add -Wnon-virtual-dtor to the default CXXFLAGS
to prevent this from happening in the future.
Change-Id: If00a99566a54c7af4cd27df6fe68dcdef4cb4e82
diff --git a/tools/chunks/catchunks/discover-version.hpp b/tools/chunks/catchunks/discover-version.hpp
index bb6a477..c34ff5e 100644
--- a/tools/chunks/catchunks/discover-version.hpp
+++ b/tools/chunks/catchunks/discover-version.hpp
@@ -1,8 +1,8 @@
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2016, Regents of the University of California,
- * Colorado State University,
- * University Pierre & Marie Curie, Sorbonne University.
+/*
+ * Copyright (c) 2016-2017, Regents of the University of California,
+ * Colorado State University,
+ * University Pierre & Marie Curie, Sorbonne University.
*
* This file is part of ndn-tools (Named Data Networking Essential Tools).
* See AUTHORS.md for complete list of ndn-tools authors and contributors.
@@ -64,6 +64,9 @@
*/
DiscoverVersion(const Name& prefix, Face& face, const Options& options);
+ virtual
+ ~DiscoverVersion();
+
/**
* @brief identify the latest Data version published.
*/