debugmode works again when not checking python implementations

theano/compile/debugmode.py

@@ -891,7 +891,9 @@ class _Linker(gof.link.LocalLinker):
                             if not r.type.is_valid_value(storage_map[r][0]):
                                 raise InvalidValueError(r, storage_map[r][0])
 
-                            # check for stride correctness if we're doing that
+                            if thunk_py:
+                                assert r in r_vals #because we put it in during the thunk_py branch
+                                # check for stride correctness (may raise exception)
                                 _check_strides_match(r_vals[r], storage_map[r][0],
                                     self.maker.mode.require_matching_strides, node.op)