Reported by Svace static analyzer.

Previously marks stack was upsized even there was space for additional item.

`yield conn`, instead of just `yield`.

Avoids an integer underflow in the time module's year handling code.

bpo-34492: Python/coreconfig.c: Add missing NULL check to _Py_wstrlist_copy().

Fix _Py_wstrlist_clear() call on a wrong list.

Reported by Svace static analyzer.

Reported by Svace static analyzer.

Also, propagate the error from PyNumber_AsSsize_t() because we don't care
only about OverflowError which is not reported if the second argument is NULL.

Reported by Svace static analyzer.

Reported by Svace static analyzer.

Reported by Svace static analyzer.

There was a missing comma.

semapthores -> semaphores

The current C implementations **crash** if the input includes a surrogate
Unicode code point, which is not possible to encode in UTF-8.

Important notes:

1.  It is possible to pass a non-UTF-8 string as a separator to the
    `.isoformat()` methods.
2.  The pure-Python `datetime.fromisoformat()` implementation accepts
    strings with a surrogate as the separator.

In `datetime.fromisoformat()`, in the special case of non-UTF-8 separators,
this implementation will take a performance hit by making a copy of the
input string and replacing the separator with 'T'.
Co-authored-by: Alexey Izbyshev <izbyshev@ispras.ru>
Co-authored-by: Paul Ganssle <paul@ganssle.io>

Introduce a configure check for strsignal(3) which defines HAVE_STRSIGNAL for
signalmodule.c. Add some common signals on HP-UX. This change applies for
Windows and HP-UX.

bpo-34170, bpo-34207: pymain_read_conf() now sets Py_UTF8Mode to
config->utf8_mode. pymain_read_conf() calls indirectly
Py_DecodeLocale() and Py_EncodeLocale() which depend on Py_UTF8Mode.

Reported by Svace static analyzer.

Reported by Svace static analyzer.

Previously, its behavior was platform-dependent and there was no error checking
under Windows.

Reported by Svace static analyzer.

Reported by Svace static analyzer.

The entry about deprecation of __getitem__ methods of
several classes was placed in the wrong section.

The missing NULL check was reported by Svace static analyzer.

Reported by Svace static analyzer.

If a globals dictionary without a '__builtins__' key is passed to
eval(), a '__builtins__' key will be inserted to the dictionary:

    >>> eval("print('__builtins__' in globals())", {})
    True

(As a result of this behavior, we can use the builtins
print() and globals() even if we passed a dictionary without a
'__builtins__' key to eval().)

bpo-22602: Raise an exception in the UTF-7 decoder for ill-formed sequences starting with "+". (GH-8741)

The UTF-7 decoder now raises UnicodeDecodeError for ill-formed
sequences starting with "+" (as specified in RFC 2152).