[release/3.3][0 SIZE] Add zero-size input validation for WarpCTC kernel#78435
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sneaxiy merged 1 commit intoPaddlePaddle:release/3.3from Apr 1, 2026
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DrRyanHuang
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SigureMo and
wanghuancoder
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SigureMo
sneaxiy
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Apr 1, 2026
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PR Category
Execute Infrastructure
PR Types
Improvements
Description
针对
ctc_loss的 0 Size 问题做出如下改动：paddle/phi/kernels/impl/warpctc_kernel_impl.h
labels、logits_length、labels_length三个输入的 batch_size 校验test/legacy_test/test_warpctc_op.py
test_dygraph_zero_size_with_padding单测用例是否引起精度变化
否
Cherry-pick of #78316 (authored by @DrRyanHuang) to
release/3.3.devPR:#78316