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[0-size Tensor No.169] Add 0-size Tensor support for paddle.nn.functional.fold [fluid_ops] #74221

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Merged
merged 1 commit into from
Jul 26, 2025
Merged

[0-size Tensor No.169] Add 0-size Tensor support for paddle.nn.functional.fold [fluid_ops] #74221

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4 changes: 4 additions & 0 deletions python/paddle/nn/functional/common.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@

from __future__ import annotations

import math
from typing import TYPE_CHECKING, Literal

import numpy
Expand Down Expand Up @@ -2753,6 +2754,9 @@ def fold(
)

assert len(x.shape) == 3, "input should be the format of [N, C, L]"
assert (
math.prod(x.shape) > 0
), "The number of elements must greater than zero."

def _is_list_or_tuple_(data):
return isinstance(data, (list, tuple))
Expand Down
12 changes: 12 additions & 0 deletions test/legacy_test/test_fold_op.py
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Original file line number Diff line number Diff line change
Expand Up @@ -283,6 +283,17 @@ def test_GT_0():
strides=0,
)

def test_zero_size():
x = paddle.randn(shape=[0, 1, 1], dtype="float32")
out = fold(
x,
output_sizes=[0, 0],
kernel_sizes=[0, 0],
dilations=0,
paddings=[0, 0],
strides=0,
)

self.assertRaises(AssertionError, test_input_shape)
self.assertRaises(AssertionError, test_kernel_shape)
self.assertRaises(ValueError, test_padding_shape)
Expand All @@ -292,6 +303,7 @@ def test_GT_0():
self.assertRaises(TypeError, test_output_size_2)
self.assertRaises(ValueError, test_block_h_w)
self.assertRaises(ValueError, test_GT_0)
self.assertRaises(AssertionError, test_zero_size)


if __name__ == '__main__':
Expand Down