Zachary Ware [Fri, 16 Jun 2017 06:06:36 +0000 (01:06 -0500)]
bpo-30450: Pull Windows dependencies from GitHub rather than svn (GH-1783) (GH-2237)
The Windows build now depends on Python 3.6 to fetch externals, but it will be downloaded via NuGet (which is downloaded via PowerShell) if it is not available via `py -3.6`. This means the only thing that must be installed on a modern Windows box to do a full build of CPython with all extensions is Visual Studio.
Also fixes an outdated note about _lzma in PCbuild/readme.txt
Victor Stinner [Thu, 15 Jun 2017 22:18:15 +0000 (00:18 +0200)]
bpo-23890: Fix ref cycle in TestCase.assertRaises (#858)
unittest.TestCase.assertRaises() now manually breaks a
reference cycle to not keep objects alive longer than expected.
(cherry picked from commit bbd3cf8f1ef1e91a8d6dac6411e18b4b9084abf5)
Serhiy Storchaka [Thu, 15 Jun 2017 14:16:38 +0000 (17:16 +0300)]
[3.6] bpo-29931 fix __lt__ check in ipaddress.ip_interface for both v4 and v6. (GH-879) (#2217)
the original logic was just comparing the network address
but this is wrong because if the network address is equal then
we need to compare the ip address for breaking the tie
The public cyrus.andrew.cmu.edu IMAP server (port 993) doesn't accept
TLS connection using our self-signed x509 certificate. Remove the two
tests which are already skipped.
Before, Enter would not, for instance, complete 're.c' to 're.compile' even with 'compile' highlighted. Now it does. Before, '\n' was inserted into text, which in Shell meant compile() and possibly execute. Now cursor is left after completion.
(cherry picked from commit 32fd874afe55e396e3c9a5af35e7bb3d8e0b8f02)
When IDLE fail to start because the socket connection fails, direct people to a new subsection of the IDLE doc listing various causes and remedies.
(cherry picked from commit 188aedf8bb623d41302e10503268b0852ea91134)
Nick Coghlan [Tue, 13 Jun 2017 10:32:46 +0000 (20:32 +1000)]
[3.6] bpo-29514: Check magic number for bugfix releases (#2157)
Add a test to check the current MAGIC_NUMBER against the
expected number for the release if the current release is
at candidate or final level. On test failure, describe to
the developer the procedure for changing the magic number.
This ensures that pre-merge CI will automatically pick up
on magic number changes in maintenance releases (and
explain why those are problematic), rather than relying on
all core developers to be aware of the implications of
such changes.
Dino Viehland [Tue, 13 Jun 2017 01:46:35 +0000 (18:46 -0700)]
[3.6] bpo-30604: Move co_extra_freefuncs to interpreter state to avoid crashes in threads (#2015)
* Move co_extra_freefuncs to interpreter state to avoid crashes in
multi-threaded scenarios involving deletion of code objects
* Don't require that extra be zero initialized
* Build test list instead of defining empty test class
* Ensure extra is always assigned on success
* Keep the old fields in the thread state object, just don't use them
Add new linked list of code extra objects on a per-interpreter basis
so that interpreter state size isn't changed
* Rename __PyCodeExtraState_Get and add comment about it going away in 3.7
Fix sort order of import's in test_code.py
* Remove an extraneous space
* Remove docstrings for comments
* Touch up formatting
* Fix casing of coextra local
* Fix casing of another variable
* Prefix PyCodeExtraState with __ to match C API for getting it
Serhiy Storchaka [Mon, 12 Jun 2017 06:02:13 +0000 (09:02 +0300)]
[3.6] bpo-28994: Fixed errors handling in atexit._run_exitfuncs(). (GH-2034) (#2121)
The traceback no longer displayed for SystemExit raised in a callback registered by atexit..
(cherry picked from commit 3fd54d4a7e604067e2bc0f8cfd58bdbdc09fa7f4)
Mariatta [Sat, 10 Jun 2017 21:41:00 +0000 (14:41 -0700)]
bpo-28556: Updates to typing module (GH-2076) (GH-2087)
This PR contains two updates to typing module:
- Support ContextManager on all versions (original PR by Jelle Zijlstra).
- Add generic AsyncContextManager..
(cherry picked from commit 29fda8db16e0edab92841277fa223f844f5a92cc)
Victor Stinner [Sat, 10 Jun 2017 09:20:03 +0000 (11:20 +0200)]
bpo-30038: fix race condition in signal delivery + wakeup fd (#1082) (#2075)
Before, it was possible to get the following sequence of
events (especially on Windows, where the C-level signal handler for
SIGINT is run in a separate thread):
- SIGINT arrives
- trip_signal is called
- trip_signal writes to the wakeup fd
- the main thread wakes up from select()-or-equivalent
- the main thread checks for pending signals, but doesn't see any
- the main thread drains the wakeup fd
- the main thread goes back to sleep
- trip_signal sets is_tripped=1 and calls Py_AddPendingCall to notify
the main thread the it should run the Python-level signal handler
- the main thread doesn't notice because it's asleep
This has been causing repeated failures in the Trio test suite:
https://github.com/python-trio/trio/issues/119
(cherry picked from commit 4ae01496971624c75080431806ed1c08e00f22c7)
Mariatta [Sat, 10 Jun 2017 03:36:28 +0000 (20:36 -0700)]
bpo-30266: support "= None" pattern in AbstractContextManager (GH-1448) (GH-2054)
contextlib.AbstractContextManager now supports anti-registration
by setting __enter__ = None or __exit__ = None, following the pattern
introduced in bpo-25958..
(cherry picked from commit 57161aac5eb9bcb0b43e551a1937ff0a84c1ec52)
Yury Selivanov [Fri, 9 Jun 2017 21:06:39 +0000 (17:06 -0400)]
[3.6] bpo-30039: Don't run signal handlers while resuming a yield from stack (GH-1081) (#1640)
If we have a chain of generators/coroutines that are 'yield from'ing
each other, then resuming the stack works like:
- call send() on the outermost generator
- this enters _PyEval_EvalFrameDefault, which re-executes the
YIELD_FROM opcode
- which calls send() on the next generator
- which enters _PyEval_EvalFrameDefault, which re-executes the
YIELD_FROM opcode
- ...etc.
However, every time we enter _PyEval_EvalFrameDefault, the first thing
we do is to check for pending signals, and if there are any then we
run the signal handler. And if it raises an exception, then we
immediately propagate that exception *instead* of starting to execute
bytecode. This means that e.g. a SIGINT at the wrong moment can "break
the chain" – it can be raised in the middle of our yield from chain,
with the bottom part of the stack abandoned for the garbage collector.
The fix is pretty simple: there's already a special case in
_PyEval_EvalFrameEx where it skips running signal handlers if the next
opcode is SETUP_FINALLY. (I don't see how this accomplishes anything
useful, but that's another story.) If we extend this check to also
skip running signal handlers when the next opcode is YIELD_FROM, then
that closes the hole – now the exception can only be raised at the
innermost stack frame.
This shouldn't have any performance implications, because the opcode
check happens inside the "slow path" after we've already determined
that there's a pending signal or something similar for us to process;
the vast majority of the time this isn't true and the new check
doesn't run at all..
(cherry picked from commit ab4413a7e9bda95b6fcd517073e2a51dafaa1624)
* RFC 1750 has been been obsoleted by RFC 4086.
* RFC 3280 has been obsoleted by RFC 5280.
* RFC 4366 has been obsoleted by RFC 6066.
(cherry picked from commit 63c2c8ac17750ba2be2cfc4e339cae1f4edee54f)
Victor Stinner [Fri, 9 Jun 2017 11:24:53 +0000 (13:24 +0200)]
bpo-30524: Fix _PyStack_UnpackDict() (#1886)
* bpo-29259: Remove unused func parameter of _PyStack_UnpackDict()
* bpo-29286: Change _PyStack_UnpackDict() prototype to be able to
notify of failure when args is NULL. _PyStack_UnpackDict() now
returns -1 on error.
[3.6] bpo-30529: Fix errors for invalid whitespaces in f-string subexpressions. (GH-1888) (#2013)
'invalid character in identifier' now is raised instead of
'f-string: empty expression not allowed' if a subexpression contains
only whitespaces and they are not accepted by Python parser.
(cherry picked from commit 2e9cd58)
On Windows, subprocess.Popen.communicate() now also ignore EINVAL
on stdin.write() if the child process is still running but closed the
pipe.
(cherry picked from commit d52aa31378ae43e044a300edfe8285954c167216)
Victor Stinner [Thu, 8 Jun 2017 21:13:12 +0000 (23:13 +0200)]
bpo-30601: Fix a refleak in WindowsConsoleIO (#2003) (#2008)
Fix a reference leak in _io._WindowsConsoleIO: PyUnicode_FSDecoder()
always initialize decodedname when it succeed and it doesn't clear
input decodedname object.
(cherry picked from commit 29adc13bd797d9c9e7fcb893a7c49ce7f7ad388c)
[3.6] bpo-30594: Fixed refcounting in newPySSLSocket (GH-1992) (#1994)
If pass a server_hostname= that fails IDNA decoding to SSLContext.wrap_socket or SSLContext.wrap_bio, then the SSLContext object had a spurious Py_DECREF called on it, eventually leading to segfaults.
(cherry picked from commit 65ece7ca2366308fa91a39a8dfa255e6bdce3cca)
Nate [Wed, 7 Jun 2017 04:21:34 +0000 (21:21 -0700)]
[3.6] bpo-29822: make inspect.isabstract() work during __init_subclass__ (#1979)
At the time when an abstract base class' __init_subclass__ runs,
ABCMeta.__new__ has not yet finished running, so in the presence of
__init_subclass__, inspect.isabstract() can no longer depend only on
TPFLAGS_IS_ABSTRACT.
(cherry picked from commit fcfe80ec2592fed8b3941c79056a8737abef7d3b)
Nate [Wed, 7 Jun 2017 00:31:03 +0000 (17:31 -0700)]
bpo-29581: bpo-29581: Make ABCMeta.__new__ pass **kwargs to type.__new__ (GH-527) (GH-1282)
Many metaclasses in the standard library don't play nice with
__init_subclass__. This bug makes ABCMeta in particular with
__init_subclass__, which is an 80/20 solution for me personally.
AFAICT, a general solution to this problem requires updating all
metaclasses in the standard library to make sure they pass **kwargs to
type.__new__, whereas this PR only fixes ABCMeta. For context, see
https://bugs.python.org/issue29581.
* added a test combining ABCMeta and __init_subclass__
* Added NEWS item
* [3.6] bpo-29581: Make ABCMeta.__new__ pass **kwargs to type.__new__ (GH-527)
Many metaclasses in the standard library don't play nice with
__init_subclass__. This bug makes ABCMeta in particular with
__init_subclass__, which is an 80/20 solution for me personally.
AFAICT, a general solution to this problem requires updating all
metaclasses in the standard library to make sure they pass **kwargs to
type.__new__, whereas this PR only fixes ABCMeta. For context, see
https://bugs.python.org/issue29581.
Clarify that `two-pass` buffer can only be dumped once, and it prints out all text sent to it during all processing, even from Clinic blocks *after* the dumping point.
The patch for bpo-30052 changed the preferred link target
for :func:`bytes` and :func`bytearray` references to be the
respective type definitions rather than the corresponding
builtin function entries.
This patch changes the daily documentation builds to disable
the output caching in Sphinx, in order to ensure that
cross-reference changes like this one are reliably picked
up and applied automatically after merging.
(cherry picked from commit 7a82f9c2b94d31c8f4cc8bb8e3151765d8b148d7)
Mariatta [Mon, 5 Jun 2017 03:06:48 +0000 (20:06 -0700)]
bpo-30530: Update Descriptor How To Documentation (GH-1845) (GH-1953)
Update the code example in Functions and Methods section
Remove objtype argument in MethodType
(cherry picked from commit 1bced56567335745f91676192fc39c06aab30da9)
Brett Cannon [Sat, 3 Jun 2017 17:33:53 +0000 (10:33 -0700)]
[3.6] Turn on macOS builds for Travis (GH-1846) (#1929)
Initially the macOS builds are allowed to fail until such time that they can be determined to be stable and not add an unacceptable amount of time to the overall Travis-passing process.
(cherry picked from commit 21c2dd7cf8414c903f0e83cf1d6b7f02f645f422)
Mariatta [Fri, 2 Jun 2017 04:56:24 +0000 (21:56 -0700)]
bpo-30052: Link `bytes` & `bytearray` to stdtypes not functions (GH-1271) (GH-1915)
Builtin container types have two potential link targets in the docs:
- their entry in the list of builtin callables
- their type documentation
This change brings `bytes` and `bytearray` into line with other
container types by having cross-references default to linking to
their type documentation, rather than their builtin callable entry..
(cherry picked from commit c6db4811f9ea3aeff0e1fafe1c60a22835ef359e)