mention of the CPython optimization hack.

Issue #13458: Fix a memory leak in the ssl module when decoding a certificate with a subjectAltName.
Patch by Robert Xiao.

an invalid integer value.

TLS key only if the thread that called fork() had an associated auto thread
state (this might not be the case for example for a thread created outside of
Python calling into a subinterpreter).

POSIX semaphores (among which FreeBSD < 8).

 * Add tests for PyUnicode_EncodeDecimal() and PyUnicode_TransformDecimalToASCII()
 * Remove the unused "e" variable in replace()

raised when the wrapped raw file is non-blocking and the write would block.
Previous code assumed that the raw write() would raise BlockingIOError, but
RawIOBase.write() is defined to returned None when the call would block.
Patch by sbt.

Patch written by Arfrever Frehtes Taifersar Arahesis.

This allows compiling extension modules with -Wswitch-enum on gcc.
Initial patch by Floris Bruynooghe.

#4147: minidom's toprettyxml no longer adds whitespace around a text node when it is the only child of an element.  Initial patch by Dan Kenigsberg.

(the encoder already accepts them).

(backport of 6b9f547e92d8)

Remove a sleep to fix transient test failures. Use skewfactor of -3 to
make it work on systems that have 1 second precision for time.time().

Closes #11999
Refs #13254