Extension Modules

-----------------

- Issue #15676: Now "mmap" check for empty files before doing the

offset check. Patch by Steven Willis.

- Issue #6493: An issue in ctypes on Windows that caused structure bitfields

of type ctypes.c_uint32 and width 32 to incorrectly be set has been fixed.

- Issue #15000: Support the "unique" x32 architecture in _posixsubprocess.c.

- Issue #9041: An issue in ctypes.c_longdouble, ctypes.c_double, and

ctypes.c_float that caused an incorrect exception to be returned in the

case of overflow has been fixed.

- Issue #14212: The re module didn't retain a reference to buffers it was

scanning, resulting in segfaults.

Tests

-----

- Issue #15304: Fix warning message when os.chdir() fails inside

test.support.temp_cwd(). Patch by Chris Jerdonek.

- Issue #15802: Fix test logic in TestMaildir.test_create_tmp. Patch

by Serhiy Storchaka.

- Issue #15747: ZFS always returns EOPNOTSUPP when attempting to set the

UF_IMMUTABLE flag (via either chflags or lchflags); refactor affected

tests in test_posix.py to account for this.

- Issue #15285: Refactor the approach for testing connect timeouts using

two external hosts that have been configured specifically for this type

of test.

- Issue #15615: Add some tests for the json module's handling of invalid

input data. Patch by Kushal Das.

- Issue #15496: Add directory removal helpers for tests on Windows.

Patch by Jeremy Kloth.

- Issue #15467: Move helpers for __sizeof__ tests into test_support.

Patch by Serhiy Storchaka.

- Issue #15320: Make iterating the list of tests thread-safe when running

tests in multiprocess mode. Patch by Chris Jerdonek.

- Issue #15230: Adopted a more systematic approach in the runpy tests

- Issue #15300: Ensure the temporary test working directories are in the same

parent folder when running tests in multiprocess mode from a Python build.

Patch by Chris Jerdonek.

- test_nntplib now tolerates being run from behind NNTP gateways that add

"X-Antivirus" headers to articles

- Issue #15043: test_gdb is now skipped entirely if gdb security settings

block loading of the gdb hooks

- Issue #14026: In test_cmd_line_script, check that sys.argv is populated

correctly for the various invocation approaches (Patch by Jason Yeo)

- Issue #14032: Fix incorrect variable name in test_cmd_line_script debugging

message (Patch by Jason Yeo)

- Issue #14589: Update certificate chain for sha256.tbs-internet.com, fixing

a test failure in test_ssl.

Build

-----

- Issue #15923: fix a mistake in asdl_c.py that resulted in a TypeError after

2801bf875a24 (see #15801).

- Issue #11715: Fix multiarch detection without having Debian development

tools (dpkg-dev) installed.

- Issue #15819: Make sure we can build Python out-of-tree from a readonly

source directory. (Somewhat related to Issue #9860.)

- Issue #15822: Ensure 2to3 grammar pickles are properly installed.

- Issue #15560: Fix building _sqlite3 extension on OS X with an SDK.

- Issue #8847: Disable COMDAT folding in Windows PGO builds.

- Issue #14197: For OS X framework builds, ensure links to the shared

library are created with the proper ABI suffix.

- Issue #14472: Update .gitignore. Patch by Matej Cepl.

- The Windows build now uses OpenSSL 1.0.0j and bzip2 1.0.6.

- Issue #14557: Fix extensions build on HP-UX. Patch by Adi Roiban.

- Issue #14437: Fix building the _io module under Cygwin.

- Issue #14387: Do not include accu.h from Python.h.

- Issue #14359: Only use O_CLOEXEC in _posixmodule.c if it is defined.

Based on patch from Hervé Coatanhay.

- Issue #14018: Fix OS X Tcl/Tk framework checking when using OS X SDKs.

Documentation

-------------

- Issue #16115: Improve subprocess.Popen() documentation around args, shell,

and executable arguments.

- Issue #13498: Clarify docs of os.makedirs()'s exist_ok argument. Done with

great native-speaker help from R. David Murray.

- Issue #15533: Clarify docs and add tests for subprocess.Popen()'s cwd

argument.

- Issue #15979: Improve timeit documentation.

- Issue #16036: Improve documentation of built-in int()'s signature and

arguments.

- Issue #15935: Clarification of argparse docs, re: add_argument() type and

default arguments. Patch contributed by Chris Jerdonek.

- Issue #11964: Document a change in v3.2 to the behavior of the indent

parameter of json encoding operations.

- Issue #14674: Add a discussion of the json module's standard compliance.

Patch by Chris Rebert.

- Issue #15630: Add an example for "continue" stmt in the tutorial. Patch by

Daniel Ellis.

- Issue #15444: Use proper spelling for non-ASCII contributor names. Patch

by Serhiy Storchaka.

- Issue 15482: Properly document the default 'level' value for __import__()

while warning about using negative values.

- Issue #15230: Clearly document some of the limitations of the runpy

module and nudge readers towards importlib when appropriate.

- Issue #13557: Clarify effect of giving two different namespaces to exec or

execfile().

- Issue #8799: Fix and improve the threading.Condition documentation.

- Issue #14943: Correct a default argument value for winreg.OpenKey

and correctly list the argument names in the function's explanation.

- Issue #14034: added the argparse tutorial.

- Issue #15250: Document that filecmp.dircmp compares files shallowly. Patch

contributed by Chris Jerdonek.

Tools/Demos

-----------

- Issue #15378: Fix Tools/unicode/comparecodecs.py. Patch by Serhiy Storchaka.

- Issue #14695: Fix missing support for starred assignments in

Tools/parser/unparse.py.

What's New in Python 3.2.3?

===========================

*Release date: 10-Apr-2012*

Build

-----

- Issue #14387: Work around a problem building extension modules under Windows

by undefining ``small`` before use in the Python headers.

What's New in Python 3.2.3 release candidate 2?

===============================================

*Release date: 18-Mar-2012*

Library

-------

- Issue #6884: Fix long-standing bugs with MANIFEST.in parsing in distutils

on Windows.

Extension Modules

-----------------

- Issue #14234: CVE-2012-0876: Randomize hashes of xml attributes in the hash

table internal to the pyexpat module's copy of the expat library to avoid a

denial of service due to hash collisions. Patch by David Malcolm with some

modifications by the expat project.

What's New in Python 3.2.3 release candidate 1?

===============================================

*Release date: 24-Feb-2012*

Core and Builtins

-----------------

- Issue #13703: oCERT-2011-003: add -R command-line option and PYTHONHASHSEED

environment variable, to provide an opt-in way to protect against denial of

service attacks due to hash collisions within the dict and set types. Patch

by David Malcolm, based on work by Victor Stinner.

- Issue #14084: Fix a file descriptor leak when importing a module with a

bad encoding.

- Issue #13020: Fix a reference leak when allocating a structsequence object

fails. Patch by Suman Saha.

- Issue #13908: Ready types returned from PyType_FromSpec.

- Issue #11235: Fix OverflowError when trying to import a source file whose

modification time doesn't fit in a 32-bit timestamp.

- Fix the builtin module initialization code to store the init function for

future reinitialization.

- Issue #8052: The posix subprocess module would take a long time closing

all possible file descriptors in the child process rather than just open

file descriptors. It now closes only the open fds if possible for the

default close_fds=True behavior.

- Issue #13629: Renumber the tokens in token.h so that they match the indexes

into _PyParser_TokenNames.

- Fix the fix for issue #12149: it was incorrect, although it had the side

effect of appearing to resolve the issue. Thanks to Mark Shannon for

noticing.

- Issue #13505: Pickle bytes objects in a way that is compatible with

Python 2 when using protocols <= 2.

- Issue #11147: Fix an unused argument in _Py_ANNOTATE_MEMORY_ORDER. (Fix

given by Campbell Barton).

- Issue #7111: Python can now be run without a stdin, stdout or stderr

stream. It was already the case with Python 2. However, the corresponding

sys module entries are now set to None (instead of an unusable file object).

- Issue #13436: Fix a bogus error message when an AST object was passed

an invalid integer value.

- Issue #13338: Handle all enumerations in _Py_ANNOTATE_MEMORY_ORDER

to allow compiling extension modules with -Wswitch-enum on gcc.

Initial patch by Floris Bruynooghe.

- Issue #13333: The UTF-7 decoder now accepts lone surrogates (the encoder

already accepts them).

- Issue #13342: input() used to ignore sys.stdin's and sys.stdout's unicode

error handler in interactive mode (when calling into PyOS_Readline()).

- Issue #13343: Fix a SystemError when a lambda expression uses a global

variable in the default value of a keyword-only argument:

(lambda *, arg=GLOBAL_NAME: None)

- Issue #10519: Avoid unnecessary recursive function calls in

setobject.c.

- Issue #10363: Deallocate global locks in Py_Finalize().

- Issue #13018: Fix reference leaks in error paths in dictobject.c.

Patch by Suman Saha.

- Issue #1294232: In a few cases involving metaclass inheritance, the

interpreter would sometimes invoke the wrong metaclass when building a new

class object. These cases now behave correctly. Patch by Daniel Urban.

- Issue #12604: VTRACE macro expanded to no-op in _sre.c to avoid compiler

warnings. Patch by Josh Triplett and Petri Lehtinen.

- Issue #13188: When called without an explicit traceback argument,

generator.throw() now gets the traceback from the passed exception's

``__traceback__`` attribute. Patch by Petri Lehtinen.

- Issue #7833: Extension modules built using distutils on Windows will no

longer include a "manifest" to prevent them failing at import time in some

embedded situations.

- Issue #13063: the Windows error ERROR_NO_DATA (numbered 232 and described

as "The pipe is being closed") is now mapped to POSIX errno EPIPE

(previously EINVAL).

- Issue #12911: Fix memory consumption when calculating the repr() of huge

tuples or lists.

- Issue #7732: Don't open a directory as a file anymore while importing a

module. Ignore the direcotry if its name matchs the module name (e.g.

"__init__.py") and raise a ImportError instead.

- Issue #13021: Missing decref on an error path. Thanks to Suman Saha for

finding the bug and providing a patch.

- Issue #12973: Fix overflow checks that relied on undefined behaviour in

list_repeat (listobject.c) and islice_next (itertoolsmodule.c). These bugs

caused test failures with recent versions of Clang.

- Issue #12802: the Windows error ERROR_DIRECTORY (numbered 267) is now

mapped to POSIX errno ENOTDIR (previously EINVAL).

- Issue #9200: The str.is* methods now work with strings that contain non-BMP

characters even in narrow Unicode builds.

- Issue #12791: Break reference cycles early when a generator exits with

an exception.

- Issue #12266: Fix str.capitalize() to correctly uppercase/lowercase

titlecased and cased non-letter characters.

Library

-------