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[3.14] gh-71810: Fix corner case (length==0) for int.to_bytes() (GH-138739)#138782

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hugovk merged 1 commit intopython:3.14from
miss-islington:backport-011179a-3.14
Sep 12, 2025
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[3.14] gh-71810: Fix corner case (length==0) for int.to_bytes() (GH-138739)#138782
hugovk merged 1 commit intopython:3.14from
miss-islington:backport-011179a-3.14

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@miss-islington miss-islington commented Sep 11, 2025

>>> (0).to_bytes(0, 'big', signed=True)
b''
>>> (-1).to_bytes(0, 'big', signed=True)  # was b''
Traceback (most recent call last):
  File "<python-input-0>", line 1, in <module>
    (-1).to_bytes(0, 'big', signed=True)
    ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
OverflowError: int too big to convert

(cherry picked from commit 011179a)

Co-authored-by: Sergey B Kirpichev [email protected]
Co-authored-by: Serhiy Storchaka [email protected]

…nGH-138739)

```pycon
>>> (0).to_bytes(0, 'big', signed=True)
b''
>>> (-1).to_bytes(0, 'big', signed=True)  # was b''
Traceback (most recent call last):
  File "<python-input-0>", line 1, in <module>
    (-1).to_bytes(0, 'big', signed=True)
    ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
OverflowError: int too big to convert
```
(cherry picked from commit 011179a)

Co-authored-by: Sergey B Kirpichev <[email protected]>
Co-authored-by: Serhiy Storchaka <[email protected]>
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LGTM

@hugovk hugovk merged commit 440b83f into python:3.14 Sep 12, 2025
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@miss-islington miss-islington deleted the backport-011179a-3.14 branch January 2, 2026 17:55
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4 participants