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gh-69011: ctypes.create_*_buffer clarify NUL termination character inclusion #132858

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May 29, 2025
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gh-69011: ctypes.create_*_buffer clarify NUL termination character inclusion #132858

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StanFromIreland Apr 23, 2025
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11 changes: 6 additions & 5 deletions Doc/library/ctypes.rst
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Expand Up @@ -2041,8 +2041,9 @@ Utility functions

If a bytes object is specified as first argument, the buffer is made one item
larger than its length so that the last element in the array is a NUL
termination character. An integer can be passed as second argument which allows
specifying the size of the array if the length of the bytes should not be used.
termination character. An integer *size* can be passed which allows
specifying the size of the array if the length of the bytes should not be used;
Note that if *size* is too small the NUL termination character will be omitted.

.. audit-event:: ctypes.create_string_buffer init,size ctypes.create_string_buffer

Expand All @@ -2057,9 +2058,9 @@ Utility functions

If a string is specified as first argument, the buffer is made one item
larger than the length of the string so that the last element in the array is a
NUL termination character. An integer can be passed as second argument which
allows specifying the size of the array if the length of the string should not
be used.
NUL termination character. An integer *size* can be passed which allows
specifying the size of the array if the length of the bytes should not be used;
Note that if *size* is too small the NUL termination character will be omitted.

.. audit-event:: ctypes.create_unicode_buffer init,size ctypes.create_unicode_buffer

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