+/* Increase VAL's reference count. */
+
+extern void value_incref (struct value *val);
+
+/* Decrease VAL's reference count. When the reference count drops to
+ 0, VAL will be freed. */
+
+extern void value_decref (struct value *val);
+
+/* A policy class to interface gdb::ref_ptr with struct value. */
+
+struct value_ref_policy
+{
+ static void incref (struct value *ptr)
+ {
+ value_incref (ptr);
+ }
+
+ static void decref (struct value *ptr)
+ {
+ value_decref (ptr);
+ }
+};
+
+/* A gdb:;ref_ptr pointer to a struct value. */
+
+typedef gdb::ref_ptr<struct value, value_ref_policy> value_ref_ptr;
+