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bpo-30708: Check for null characters in PyUnicode_AsWideCharString(). (#2285)

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Raise a ValueError if the second argument is NULL and the wchar_t\*
string contains null characters.
This commit is contained in:
Serhiy Storchaka 2017-06-27 16:03:14 +03:00 • committed by GitHub
parent 65474b9d7a
commit e613e6add5
6 changed files with 44 additions and 42 deletions
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16
Doc/c-api/unicode.rst
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@ -934,16 +934,22 @@ wchar_t Support
Convert the Unicode object to a wide character string. The output string
always ends with a null character. If *size* is not *NULL*, write the number
of wide characters (excluding the trailing null termination character) into
*\*size*.
*\*size*. Note that the resulting :c:type:`wchar_t` string might contain
null characters, which would cause the string to be truncated when used with
most C functions. If *size* is *NULL* and the :c:type:`wchar_t*` string
contains null characters a :exc:`ValueError` is raised.
Returns a buffer allocated by :c:func:`PyMem_Alloc` (use
:c:func:`PyMem_Free` to free it) on success. On error, returns *NULL*,
*\*size* is undefined and raises a :exc:`MemoryError`. Note that the
resulting :c:type:`wchar_t` string might contain null characters, which
would cause the string to be truncated when used with most C functions.
:c:func:`PyMem_Free` to free it) on success. On error, returns *NULL*
and *\*size* is undefined. Raises a :exc:`MemoryError` if memory allocation
is failed.
.. versionadded:: 3.2
.. versionchanged:: 3.7
Raises a :exc:`ValueError` if *size* is *NULL* and the :c:type:`wchar_t*`
string contains null characters.
.. _builtincodecs: