T. Wouters [Tue, 15 Apr 2025 09:39:32 +0000 (11:39 +0200)]
gh-129987: Selectively re-enable SLP autovectorization of _PyEval_EvalFrameDefault (#132530)
Only disable SLP autovectorization of `_PyEval_EvalFrameDefault` on newer
GCCs, as the optimization bug seems to exist only on GCC 12 and later, and
before GCC 9 disabling the optimization has a dramatic performance impact.
Barney Gale [Tue, 15 Apr 2025 00:05:06 +0000 (01:05 +0100)]
GH-123599: Match `file:` URL hostname against machine hostname in urllib (#132523)
In `_is_local_authority()`, return early if the authority matches the
machine hostname from `socket.gethostname()`, rather than resolving the
names and matching IP addresses.
gh-132099: Harmonize Bluetooth address handling (GH-132486)
Now all protocols always accept the Bluetooth address as string and
getsockname() always returns the Bluetooth address as string.
* BTPROTO_SCO now accepts not only bytes, but str.
* BTPROTO_SCO now checks address for embedded null.
* On *BSD, BTPROTO_HCI now accepts str instead of bytes.
* On FreeBSD, getsockname() for BTPROTO_HCI now returns str instead of bytes.
* On NetBSD and DragonFly BDS, BTPROTO_HCI now checks address for embedded null.
Barney Gale [Mon, 14 Apr 2025 00:49:02 +0000 (01:49 +0100)]
GH-125866: Support complete "file:" URLs in urllib (#132378)
Add optional *add_scheme* argument to `urllib.request.pathname2url()`; when
set to true, a complete URL is returned. Likewise add optional
*require_scheme* argument to `url2pathname()`; when set to true, a complete
URL is accepted.
Robin Jadoul [Sun, 13 Apr 2025 21:46:20 +0000 (23:46 +0200)]
GH-115322: Add missing audit hooks (GH-115624)
Add extra audit hooks to catch C function calling from ctypes,
reading/writing files through readline and executing external
programs through _posixsubprocess.
* Make audit-tests for open pass when readline.append_history_file is unavailable
* Less direct testing of _posixsubprocess for audit hooks
* Also remove the audit hook from call_cdeclfunction now that _ctypes_callproc does it instead.
* reword the NEWS entry.
* mention readline in NEWS
* add versionchanged markers
* fix audit_events.rst versionadded
* doc lint
---------
Co-authored-by: Gregory P. Smith <greg@krypto.org>
gh-132429: Fix support of Bluetooth sockets on NetBSD and DragonFly BSD (GH-132431)
* Also add support for cid and bdaddr_type in the BTPROTO_L2CAP address on FreeBSD.
* Return cid in getsockname() for BTPROTO_L2CAP if it is not zero.
* Fix a compiler warning on FreeBSD.
gh-132388: Increase test coverage for HMAC (#132389)
- Correctly test missing `digestmod` and `digest` parameters.
- Test when chunks of length > 2048 are passed to `update()`.
- Test one-shot HMAC-BLAKE2.
Ken Jin [Fri, 11 Apr 2025 08:06:05 +0000 (16:06 +0800)]
gh-132257: Remove -flto-partition=none for Linux LTO builds (GH-132258)
Change the default LTO flags on GCC to not pass -flto-partition=none, and allow parallelization of LTO. This has a multiple factor speedup for LTO build times on GCC, with no noticeable loss in performance.
On newer make and newer GCC, this passes the jobserver automatically to GCC (or more like GCC grabs it from the env vars).
On older make, this will have benign warnings about serial compilation. It's safe to ignore them.
Barney Gale [Thu, 10 Apr 2025 19:58:04 +0000 (20:58 +0100)]
GH-123599: `url2pathname()`: handle authority section in file URL (#126844)
In `urllib.request.url2pathname()`, if the authority resolves to the
current host, discard it. If an authority is present but resolves somewhere
else, then on Windows we return a UNC path (as before), and on other
platforms we raise `URLError`.
Affects `pathlib.Path.from_uri()` in the same way.
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com> Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
gh-132336: Mark a few "slow path" functions used by the interpreter loop as noinline (#132337)
Mark a few functions used by the interpreter loop as noinline
These are all the slow path and should not be inlined into the interpreter
loop. Unfortunately, they end up being inlined with LTO and the current PGO
task.
gh-128384: Use a context variable for warnings.catch_warnings (gh-130010)
Make `warnings.catch_warnings()` use a context variable for holding
the warning filtering state if the `sys.flags.context_aware_warnings`
flag is set to true. This makes using the context manager thread-safe in
multi-threaded programs.
Add the `sys.flags.thread_inherit_context` flag. If true, starting a new
thread with `threading.Thread` will use a copy of the context
from the caller of `Thread.start()`.
Both these flags are set to true by default for the free-threaded build
and false for the default build.
Move the Python implementation of warnings.py into _py_warnings.py.
gh-129987: Disable GCC SLP autovectorization for the interpreter loop on x86-64 (#132295)
The SLP autovectorizer can cause poor code generation for opcode dispatch, negating any benefit we get from vectorization elsewhere in the interpreter loop.