--- a/runtime/typemapping.py	Wed Jun 16 18:27:05 2021 +0200
+++ b/runtime/typemapping.py	Wed Jun 16 18:27:27 2021 +0200
@@ -92,7 +92,7 @@
             buffoffset += sizeof(c_type) if iectype != "STRING" else len(value)+1
             res.append(value)
         else:
-            break
+            return None
     if buffoffset and buffoffset == buffsize:
         return res
     return None