diff -r 610801fe1b88 -r 3cc5663af196 runtime/typemapping.py
--- a/runtime/typemapping.py	Fri Jun 11 11:56:07 2021 +0200
+++ b/runtime/typemapping.py	Mon Jun 14 16:48:39 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