1 files changed, 12 insertions, 0 deletions
diff --git a/gnuradio-runtime/include/gnuradio/basic_block.h b/gnuradio-runtime/include/gnuradio/basic_block.h
index 7a265cd05e..3816e8ab98 100644
--- a/gnuradio-runtime/include/gnuradio/basic_block.h
+++ b/gnuradio-runtime/include/gnuradio/basic_block.h
@@ -127,6 +127,18 @@ protected:
     // Message passing interface
     pmt::pmt_t d_message_subscribers;
 
+    /*!
+     * \brief This is meant to be called by derived classes (e.g. block) to get
+     * a shared pointer internally. This is needed because
+     * std::enable_shared_from_this doesn't seem to work with derived classes
+     * in an inheritance hierarchy.
+     */
+    template <typename Derived>
+    std::shared_ptr<Derived> shared_from_base()
+    {
+        return std::static_pointer_cast<Derived>(shared_from_this());
+    }
+
 public:
     pmt::pmt_t message_subscribers(pmt::pmt_t port);
     ~basic_block() override;