Gregory P. Smith [Thu, 31 Mar 2022 20:42:28 +0000 (13:42 -0700)]
bpo-47151: Fallback to fork when vfork fails in subprocess. (GH-32186)
bpo-47151: Fallback to fork when vfork fails in subprocess. An OS kernel can specifically decide to disallow vfork() in a process. No need for that to prevent us from launching subprocesses.
Eric Snow [Thu, 31 Mar 2022 20:29:52 +0000 (14:29 -0600)]
bpo-47146: Stop Depending On regen-deepfreeze For regen-global-objects (gh-32218)
This effectively reverts the Makefile change in gh-31637. I've added some notes so it is more clear what is going on.
We also update the "Check if generated files are up to date" job to run "make regen-deepfreeze" to ensure "make regen-global-objects" catches deepfreeze.c.
bpo-45847: Port _tkinter to PY_STDLIB_MOD (GH-31698)
- Remove ``--with-tclk-*`` options from `configure`
- Use pkg-config to detect `_tkinter` dependencies (Tcl/Tk, X11)
- Manual override via environment variables `TCLTK_CFLAGS` and `TCLTK_LIBS`
Add _PyCFunctionObject_CAST() and _PyCMethodObject_CAST() macros to
make macros casting their argument easier to read, but also to check
the type of their input in debug mode: assert(PyCFunction_Check(func)
and assert(PyCMethod_Check(func).
Reformat also PyCFunction_XXX() macros for readability.
Add macros to cast objects to PyASCIIObject*, PyCompactUnicodeObject*
and PyUnicodeObject*: _PyASCIIObject_CAST(),
_PyCompactUnicodeObject_CAST() and _PyUnicodeObject_CAST(). Using
these new macros make the code more readable and check their argument
with: assert(PyUnicode_Check(op)).
Remove redundant assert(PyUnicode_Check(op)) in macros using directly
or indirectly these new CAST macros.
benfogle [Tue, 29 Mar 2022 21:21:36 +0000 (17:21 -0400)]
bpo-42340: Document issues around KeyboardInterrupt (GH-23255)
Update documentation to note that in some circumstances,
KeyboardInterrupt may cause code to enter an inconsistent state. Also
document sample workaround to avoid KeyboardInterrupt, if needed.
Ma Lin [Tue, 29 Mar 2022 14:31:01 +0000 (22:31 +0800)]
bpo-35859: Fix a few long-standing bugs in re engine (GH-12427)
In rare cases, capturing group could get wrong result.
Regular expression engines in Perl and Java have similar bugs.
The new behavior now matches the behavior of more modern
RE engines: in the regex module and in PHP, Ruby and Node.js.
The enter_context is updated with following information: 'The :meth:`__enter__` method
returns the ExitStack instance, and performs no additional operations.'
Christian Heimes [Thu, 24 Mar 2022 21:09:42 +0000 (23:09 +0200)]
bpo-40280: Add wasm32-emscripten and wasm32-wasi SOABI (GH-32095)
Shared extension on Emscripten now have suffix
``.cpython-311-wasm32-emscripten.so`` (JS loader) and
``.cpython-311-wasm32-emscripten.wasm`` (WebAssembly code).
The goal here is to reduce potential confusion between
`assert_type(val, type)` and `assert isinstance(val, typ)`.
The former is meant to ask a type checker to confirm a fact, the latter
is meant to tell a type checker a fact. The behaviour of the latter more
closely resembles what I'd expect from the prior phrasing of
"assert [something] to the type checker".
Eric Snow [Wed, 23 Mar 2022 15:55:52 +0000 (09:55 -0600)]
bpo-46712: Do not Regen Deep-Frozen Modules before Generating Global Objects (gh-32061)
We have to run "make regen-deepfreeze" before running Tools/scripts/generate-global-objects.py; otherwise we will miss any changes to global objects in deep-frozen modules (which aren't committed in the repo). However, building $(PYTHON_FOR_FREEZE) fails if one of its source files had a global object (e.g. via _Py_ID(...)) added or removed, without generate-global-objects.py running first. So "make regen-global-objects" would sometimes fail.
We solve this by running generate-global-objects.py before *and* after "make regen-deepfreeze". To speed things up and cut down on noise, we also avoid updating the global objects files if there are no changes to them.
Andrew Svetlov [Wed, 23 Mar 2022 15:43:05 +0000 (17:43 +0200)]
bpo-46829: Deprecate passing a message into Future.cancel() and Task.cancel() (GH-31840)
After a long deliberation we ended up feeling that the message argument for Future.cancel(), added in 3.9, was a bad idea, so we're deprecating it in 3.11 and plan to remove it in 3.13.
Christian Heimes [Tue, 22 Mar 2022 10:04:36 +0000 (12:04 +0200)]
bpo-40280: Skip socket, fork, subprocess tests on Emscripten (GH-31986)
- Add requires_fork and requires_subprocess to more tests
- Skip extension import tests if dlopen is not available
- Don't assume that _testcapi is a shared extension
- Skip a lot of socket tests that don't work on Emscripten
- Skip mmap tests, mmap emulation is incomplete
- venv does not work yet
- Cannot get libc from executable
The "entire" test suite is now passing on Emscripten with EMSDK from git head (91 suites are skipped).
Jeremy Kloth [Tue, 22 Mar 2022 00:06:55 +0000 (18:06 -0600)]
bpo-44336: Prevent tests hanging on child process handles on Windows (GH-26578)
Replace the child process `typeperf.exe` with a daemon thread that reads the performance counters directly. This prevents the issues that arise from inherited handles in grandchild processes (see issue37531 for discussion).
We only use the load tracker when running tests in multiprocess mode. This prevents inadvertent interactions with tests expecting a single threaded environment. Displaying load is really only helpful for buildbots running in multiprocess mode anyway.