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Make CPython PEP summary entry links consistent, add pep 456 discussion.

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R David Murray 2013-12-21 12:32:10 -05:00
parent 266772abe9
commit c16dfe1837
1 changed files with 24 additions and 5 deletions
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Doc/whatsnew/3.4.rst
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@ -123,9 +123,9 @@ Significantly Improved Library Modules:
CPython implementation improvements:
* :ref:`PEP 442: Safe object finalization <pep-442>`
* :ref:`PEP 445: Configurable memory allocators <pep-445>`
* :pep:`456` Secure and interchangeable hash algorithm
* :pep:`442`: :ref:`Safe object finalization <whatsnew-pep-442>`
* :pep:`445`: :ref:`Configurable memory allocators <whatsnew-pep-445>`
* :pep:`456`: :ref:`Secure and interchangeable hash algorithm <whatsnew-pep-456>`
* Improve finalization of Python modules to avoid setting their globals
to None, in most cases (:issue:`18214`).
* A more efficient :mod:`marshal` format (:issue:`16475`).
@ -909,7 +909,7 @@ CPython Implementation Changes
==============================
.. _pep-445:
.. _whatsnew-pep-445:
PEP 445: Customization of CPython memory allocators
---------------------------------------------------
@ -923,7 +923,7 @@ the CPython interpreter.
PEP written and implemented by Victor Stinner.
.. _pep-442:
.. _whatsnew-pep-442:
PEP 442: Safe object finalization
---------------------------------
@ -943,6 +943,25 @@ on the normal operation of the cyclic garbage collector.
PEP written and implemented by Antoine Pitrou.
.. _whatsnew-pep-456:
PEP 456: Secure and Interchangeable Hash Algorithm
--------------------------------------------------
:pep:`456` follows up on earlier security fix work done on Python's hash
algorithm to address certain DOS attacks to which public facing APIs backed by
dictionary lookups may be subject. (See :issue:`14621` for the start of the
current round of improvements.) The PEP unifies CPython's hash code to make it
easier for a packager to substitute a different hash algorithm, and switches
Python's default implementation to a SipHash implementation on platforms that
have a 64 bit data type. Any performance differences in comparison with the
older FNV algorithm are trivial.
The PEP adds additional fields to the :func:`sys.hash_info` struct sequence to
describe the hash algorithm in use by the currently executing binary. Otherwise,
the PEP does not alter any existing CPython APIs.
Other build and C API changes
-----------------------------