VFS: Satisfy GNATprove and No_Secondary_Stack
diff --git a/default.adc b/default.adc
index c4a1e03..a1cf743 100644
--- a/default.adc
+++ b/default.adc
@@ -1 +1,2 @@
+pragma Restrictions (No_Secondary_Stack);
 pragma SPARK_Mode (On);