[bugfix] Correctly guard with fastdg option

python/dune/perftool/sumfact/symbolic.py

@@ -114,7 +114,10 @@ class VectorSumfactKernelInput(SumfactKernelInterfaceBase):
 
     @property
     def signature_args(self):
-        return tuple("const double* fastdg{}".format(i)for i, _ in enumerate(remove_duplicates(self.interfaces)))
+        if get_form_option("fastdg"):
+            return tuple("const double* fastdg{}".format(i)for i, _ in enumerate(remove_duplicates(self.interfaces)))
+        else:
+            return ()
 
     @property
     def function_name_suffix(self):