extern void bt_plugin_set_get_ref(const bt_plugin_set *plugin_set);
extern void bt_plugin_set_put_ref(const bt_plugin_set *plugin_set);
+
+/* Helpers */
+
+bt_property_availability bt_plugin_get_version_wrapper(
+ const bt_plugin *plugin, unsigned int *OUT,
+ unsigned int *OUT, unsigned int *OUT, const char **OUT);
+
+%{
+
+/*
+ * This wrapper ensures that when the API function fails, the `*extra` output
+ * parameter is set to NULL. This is necessary because the epilogue of the
+ * "char **OUT" typemap will use that value to make a Python str object. We
+ * can't rely on the initial value of `*extra`, it could point to unreadable
+ * memory.
+ */
+
+bt_property_availability bt_plugin_get_version_wrapper(
+ const bt_plugin *plugin, unsigned int *major,
+ unsigned int *minor, unsigned int *patch, const char **extra)
+{
+ bt_property_availability ret;
+
+ ret = bt_plugin_get_version(plugin, major, minor, patch, extra);
+
+ if (ret == BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE) {
+ *extra = NULL;
+ }
+
+ return ret;
+}
+
+%}