[fix] no warning for position_ids buffer (#6063)

src/transformers/modeling_bert.py

@@ -699,6 +699,8 @@ class BertModel(BertPreTrainedModel):
 
     """
 
+    authorized_missing_keys = [r"position_ids"]
+
     def __init__(self, config):
         super().__init__(config)
         self.config = config

src/transformers/modeling_mobilebert.py

@@ -788,6 +788,8 @@ class MobileBertModel(MobileBertPreTrainedModel):
         https://arxiv.org/pdf/2004.02984.pdf
     """
 
+    authorized_missing_keys = [r"position_ids"]
+
     def __init__(self, config):
         super().__init__(config)
         self.config = config

src/transformers/modeling_openai.py

@@ -272,6 +272,7 @@ class OpenAIGPTPreTrainedModel(PreTrainedModel):
     config_class = OpenAIGPTConfig
     load_tf_weights = load_tf_weights_in_openai_gpt
     base_model_prefix = "transformer"
+    authorized_missing_keys = [r"position_ids"]
 
     def _init_weights(self, module):
         """ Initialize the weights.

src/transformers/modeling_xlm.py

@@ -375,7 +375,9 @@ XLM_INPUTS_DOCSTRING = r"""
     XLM_START_DOCSTRING,
 )
 class XLMModel(XLMPreTrainedModel):
-    def __init__(self, config):  # , dico, is_encoder, with_output):
+    authorized_missing_keys = [r"position_ids"]
+
+    def __init__(self, config):
         super().__init__(config)
 
         # encoder / decoder, output layer