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gh-112026: Add again <unistd.h> include in Python.h (#112046)

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Add again <ctype.h> and <unistd.h> includes in Python.h, but don't
include them in the limited C API version 3.13 and newer.
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Victor Stinner 2023-11-15 16:59:32 +01:00 • committed by GitHub
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3 changed files with 15 additions and 21 deletions
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18
Doc/whatsnew/3.13.rst
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@ -1191,17 +1191,6 @@ Porting to Python 3.13
also the ``HAVE_IEEEFP_H`` macro.
(Contributed by Victor Stinner in :gh:`108765`.)
* ``Python.h`` no longer includes the ``<unistd.h>`` standard header file. If
needed, it should now be included explicitly. For example, it provides the
functions: ``read()``, ``write()``, ``close()``, ``isatty()``, ``lseek()``,
``getpid()``, ``getcwd()``, ``sysconf()``, ``getpagesize()``, ``alarm()`` and
``pause()``.
As a consequence, ``_POSIX_SEMAPHORES`` and ``_POSIX_THREADS`` macros are no
longer defined by ``Python.h``. The ``HAVE_UNISTD_H`` and ``HAVE_PTHREAD_H``
macros defined by ``Python.h`` can be used to decide if ``<unistd.h>`` and
``<pthread.h>`` header files can be included.
(Contributed by Victor Stinner in :gh:`108765`.)
* ``Python.h`` no longer includes these standard header files: ``<time.h>``,
``<sys/select.h>`` and ``<sys/time.h>``. If needed, they should now be
included explicitly. For example, ``<time.h>`` provides the ``clock()`` and
@ -1210,13 +1199,6 @@ Porting to Python 3.13
and ``setitimer()`` functions.
(Contributed by Victor Stinner in :gh:`108765`.)
* ``Python.h`` no longer includes the ``<ctype.h>`` standard header file. If
needed, it should now be included explicitly. For example, it provides
``isalpha()`` and ``tolower()`` functions which are locale dependent. Python
provides locale independent functions, like :c:func:`!Py_ISALPHA` and
:c:func:`!Py_TOLOWER`.
(Contributed by Victor Stinner in :gh:`108765`.)
* If the :c:macro:`Py_LIMITED_API` macro is defined, :c:macro:`!Py_BUILD_CORE`,
:c:macro:`!Py_BUILD_CORE_BUILTIN` and :c:macro:`!Py_BUILD_CORE_MODULE` macros
are now undefined by ``<Python.h>``.