transformers

48ad2d5b - Fix false positive right-padding warning for decoder-only models in pipeline (#44021)

Fix false positive right-padding warning for decoder-only models in pipeline (#44021) * Fix false positive right-padding warning for decoder-only models Two changes to fix the spurious 'right-padding was detected' warning that fires for Qwen3 and other models during batched pipeline inference: 1. TextGenerationPipeline: Set padding_side='left' automatically for decoder-only models. The default tokenizer padding_side is 'right', which causes incorrect padding for batched generation. The pipeline now overrides this to 'left' on initialization. 2. GenerationMixin.generate: Improve right-padding detection by using the attention_mask when available, instead of only checking if the last token equals pad_token_id. The old heuristic produced false positives when pad_token_id == eos_token_id or bos_token_id (as is the case for Qwen3 where both are token 151643). Fixes #43906 Related to #38071 * Fix padding_side conflict when feature_extractor is present (e.g., WhisperForCausalLM) Only set tokenizer.padding_side='left' when no feature_extractor exists, to avoid ValueError from pad_collate_fn when they disagree. * fix the test itself, pipe doesn't need feat extractors --------- Co-authored-by: ManasVardhan <manasvardhan@users.noreply.github.com> Co-authored-by: raushan <raushan@huggingface.co>