A program that runs indefinitely can overfill memory.

Move Py_BUILD_CORE code from Include/fileutils.h to a new
Include/internal/pycore_fileutils.h file.

Allow sending more than 2 GB at once on a multiprocessing connection on non-Windows systems.

Add a new subsection to the doc.

_testcapimodule.c must not include pycore_pathconfig.h, since it's an
internal header files.

Changes:

* Add _PyCoreConfig_AsDict() function to coreconfig.c.
* Remove pycore_pathconfig.h include from _testcapimodule.h.
* pycore_pathconfig.h now requires Py_BUILD_CORE to be defined.
* _testcapimodule.c compilation now fails if it's built with
  Py_BUILD_CORE defined.

The test depended on '/usr/share/zoneinfo/posixrules' or equivalent
because it set TZ without explicit DST transition rules. At least
on OpenSUSE Tumbleweed that file is linked to '/etc/localtime',
making the test fail with certain local timezones,
such as 'Europe/Moscow' which doesn't have DST transitions since 2011.

(This should have been done with the first PR for this issue.)

The section is renamed from "IDLE -- console differences".  It mostly
covers the implications of using custom sys.stdxxx objects.

https://bugs.python.org/issue35119

§31.5.6.3. Importing a source file directly: `module_from_spec` is new in Python 3.5.

"p" was not initialized if the first PyMem_RawRealloc() call failed.

Two kind of mistakes:

1. Missed space. After concatenating there is no space between words.

2. Missed comma. Causes unintentional concatenating in a list of strings.

The new option in the CLI of the profile module allow to profile
executable modules. This change follows the same implementation as the
one already present in `cProfile`.

As the argument is now present on both modules, move the tests to the
common test case to be run with profile as well.

This PR adds a cross-reference to the ellipsis object and the representation of recursive item in containers as indicated in [issue 9842](https://bugs.python.org/issue9842) by @bitdancer.


https://bugs.python.org/issue9842

This pull request adds some information about the special multipart/signed handling to clear about disabling header folding.


https://bugs.python.org/issue31887

Reported by ASAN.

Thanks!

Use `__GNUC__` instead of non-existing `__GNUC_MAJOR__`.





https://bugs.python.org/issue35147

Some methods in the os module can accept path-like objects. This is documented in the general documentation but not in the function docstrings. To keep both in sync, the docstrings need to be updated to reflect that path-like objects are also accepted.

Previous version was casting to Py_ssize_t incorrectly
and exhibited unexpected behavior on big-endian systems.

This could cause compile errors on macOS or other platforms.

https://bugs.python.org/issue35075

This implements getstate and setstate for the cjkcodecs multibyte incremental encoders/decoders, primarily to fix issues with seek/tell.

The encoder getstate/setstate is slightly tricky as the "state" is pending bytes + MultibyteCodec_State but only an integer can be returned. The approach I've taken is to encode this data into a long, similar to how .tell() encodes a "cookie_type" as a long.


https://bugs.python.org/issue33578

* And pycore_lifecycle.h and pycore_pathconfig.h headers to
  Include/internal/
* Move Py_BUILD_CORE specific code from coreconfig.h and
  pylifecycle.h to pycore_pathconfig.h and pycore_lifecycle.h
* Move _Py_wstrlist_XXX() definitions and _PyPathConfig code
  from pycore_state.h to pycore_pathconfig.h
* Move "Init" and "Fini" function definitions from pylifecycle.c to
  pycore_lifecycle.h.

The accu.h header is no longer part of the Python C API: it has been
moved to the "internal" headers which are restricted to Python
itself.

Replace #include "accu.h" with #include "pycore_accu.h".