Fix a crash caused by immortal interned strings being shared between
sub-interpreters that use basic single-phase init. In that case, the string
can be used by an interpreter that outlives the interpreter that created and
interned it. For interpreters that share obmalloc state, also share the
interned dict with the main interpreter.
This is an un-revert of gh-124646 that then addresses the Py_TRACE_REFS
failures identified by gh-124785 (i.e. backporting gh-125709 too).
(cherry picked from commit f2cb39947093feda3ff85b8dc820922cc5e5f954, AKA gh-124865)
Co-authored-by: Eric Snow <ericsnowcurrently@gmail.com>
gh-126876: Fix socket internal_select() for large timeout (GH-126968)
If the timeout is larger than INT_MAX, replace it with INT_MAX, in
the poll() code path.
Add an unit test.
(cherry picked from commit b3687ad454c4ac54c8599a10f3ace8a13ca48915)
Co-authored-by: Victor Stinner <vstinner@python.org>
[3.13] gh-113841: fix possible undefined division by 0 in _Py_c_pow() (GH-127211) (GH-127216)
Note, that transformed expression is not an equivalent for original one (1/exp(-x) != exp(x) in general for floating-point numbers). Though, the difference seems to be ~1ULP for good libm implementations.
It's more interesting why division was used from beginning. Closest algorithm I've found (no error checks, of course;)) - it's Algorithm 190 from ACM: https://dl.acm.org/doi/10.1145/366663.366679. It uses subtraction in the exponent.
(cherry picked from commit f7bb658124aba74be4c13f498bf46cfded710ef9)
(cherry picked from commit f41d8d89e79d634895868656f50a0e16e339f9d6)
Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
gh-126699: allow AsyncIterator to be used as a base for Protocols (GH-126702)
(cherry picked from commit feb3e0b19cb03f06364a3f5e970f0861b8883d1c)
Co-authored-by: Stephen Morton <github@tungol.org>
* Replace: The :keyword:`global` -> The :keyword:`global` statement
Add :keyword: when it's needed
* Replace repeated links with duoble backticks
(cherry picked from commit 94a7a4e22fb8f567090514785c69e65298acca42)
Co-authored-by: Beomsoo Kim <beoms424@gmail.com>
The CPython uses _Py_dg_dtoa(), which does rounding to nearest with half
to even tie-breaking rule.
If that functions is unavailable, PyOS_double_to_string() fallbacks to
system snprintf(). Since CPython 3.12, build requirements include C11
compiler *and* support for IEEE 754 floating point numbers (Annex F).
This means that FE_TONEAREST macro is available and, per default,
printf-like functions should use same rounding mode as _Py_dg_dtoa().
(cherry picked from commit 7d7d56d8b1147a6b85e1c09d01b164df7c5c4942)
Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Add the missing `f` on an f-string error message in multiprocessing. (GH-127462)
(cherry picked from commit 11c01092d5fa8f02c867a7f1f3c135ce63db4838)
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Threads are gone after fork, so clear the queues too. Otherwise the
child process (here created via multiprocessing.Process) crashes on
interpreter exit.
(cherry picked from commit 1848ce61f349533ae5892a8c24c2e0e3c364fc8a)
Co-authored-by: Andrei Bodrov <Drino@users.noreply.github.com>
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
gh-127208: Reject null character in _imp.create_dynamic() (#127400)
_imp.create_dynamic() now rejects embedded null characters in the
path and in the module name.
Backport also the _PyUnicode_AsUTF8NoNUL() function.
(cherry picked from commit b14fdadc6c620875a20b7ccc3c9b069e85d8557a)
gh-127258: Fix asyncio test_staggered_race_with_eager_tasks() (GH-127358)
Replace the sleep(2) with a task which is blocked forever.
(cherry picked from commit bfabf96b50b7d6a9c15b298a86ba3633b05a1fd7)
Co-authored-by: Victor Stinner <vstinner@python.org>
gh-127303: Add docs for token.EXACT_TOKEN_TYPES (GH-127304)
---------
(cherry picked from commit dd3a87d2a8f8750978359a99de2c5cb2168351d1)
Co-authored-by: Илья Любавский <100635212+lubaskinc0de@users.noreply.github.com>
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
Co-authored-by: Tomas R. <tomas.roun8@gmail.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
gh-127190: Fix local_setattro() error handling (GH-127366)
Don't make the assumption that the 'name' argument is a string. Use
repr() to format the 'name' argument instead.
(cherry picked from commit 20657fbdb14d50ca4ec115da0cbef155871d8d33)
Co-authored-by: Victor Stinner <vstinner@python.org>
gh-123967: Fix faulthandler for trampoline frames (#127329)
If the top-most frame is a trampoline frame, skip it.
(cherry picked from commit 58e334e1431b2ed6b70ee42501ea73e08084e769)
Since MultiByteToWideChar()/WideCharToMultiByte() is not reversible if
the data contains invalid UTF-8 sequences, use binary search to
calculate the number of written bytes from the number of written
characters.
Also fix writing incomplete UTF-8 sequences.
Also fix handling of memory allocation failures.
(cherry picked from commit 3cf83d91a5baf3600dd60f7aaaf4fb6d73c4b8a9)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
gh-127182: Fix `io.StringIO.__setstate__` crash when `None` is the first value (GH-127219)
(cherry picked from commit a2ee89968299fc4f0da4b5a4165025b941213ba5)
Co-authored-by: sobolevn <mail@sobolevn.me>
Co-authored-by: Victor Stinner <vstinner@python.org>
Improve `pathname2url()` and `url2pathname()` docs (GH-127125)
These functions have long sown confusion among Python developers. The
existing documentation says they deal with URL path components, but that
doesn't fit the evidence on Windows:
>>> pathname2url(r'C:\foo')
'///C:/foo'
>>> pathname2url(r'\\server\share')
'////server/share' # or '//server/share' as of quite recently
If these were URL path components, they would imply complete URLs like
`file://///C:/foo` and `file://////server/share`. Clearly this isn't right.
Yet the implementation in `nturl2path` is deliberate, and the
`url2pathname()` function correctly inverts it.
On non-Windows platforms, the behaviour until quite recently is to simply
quote/unquote the path without adding or removing any leading slashes. This
behaviour is compatible with *both* interpretations -- 1) the value is a
URL path component (existing docs), and 2) the value is everything
following `file:` (this commit)
The conclusion I draw is that these functions operate on everything after
the `file:` prefix, which may include an authority section. This is the
only explanation that fits both the Windows and non-Windows behaviour.
It's also a better match for the function names.
(cherry picked from commit 307c63358681d669ae39e5ecd814bded4a93443a)
Co-authored-by: Barney Gale <barney.gale@gmail.com>
Fix "useable" typo in docs (GH-127200)
Fix typo in docs
(cherry picked from commit dbd23790dbd662169905be6300259992639d4e69)
Co-authored-by: Stan U <89152624+StanFromIreland@users.noreply.github.com>
Doc: C API: Fix `Py_NewInterpreterFromConfig` example code (GH-126667)
(cherry picked from commit e3038e976b25a58f512d8c7083a752c89436eb0d)
Co-authored-by: Richard Hansen <rhansen@rhansen.org>
If Python fails to start newly created thread
due to failure of underlying PyThread_start_new_thread() call,
its state should be removed from interpreter' thread states list
to avoid its double cleanup.
(cherry picked from commit ca3ea9ad05c3d876a58463595e5b4228fda06936)
Co-authored-by: Radislav Chugunov <52372310+chgnrdv@users.noreply.github.com>
* Name without a PATHEXT extension is only searched if the mode does not
include X_OK.
* Support multi-component PATHEXT extensions (e.g. ".foo.bar").
* Support files without extensions in PATHEXT contains dot-only extension
(".", "..", etc).
* Support PATHEXT extensions that end with a dot (e.g. ".foo.").
(cherry picked from commit 8899e85de100557899da05f0b37867a371a73800)
GH-127078: `url2pathname()`: handle extra slash before UNC drive in URL path (GH-127132)
Decode a file URI like `file://///server/share` as a UNC path like
`\\server\share`. This form of file URI is created by software the simply
prepends `file:///` to any absolute Windows path.
(cherry picked from commit 8c98ed846a7d7e50c4cf06f823d94737144dcf6a)
Co-authored-by: Barney Gale <barney.gale@gmail.com>
GH-126766: `url2pathname()`: handle 'localhost' authority (GH-127129)
Discard any 'localhost' authority from the beginning of a `file:` URI. As a
result, file URIs like `//localhost/etc/hosts` are correctly decoded as
`/etc/hosts`.
(cherry picked from commit ebf564a1d3e2e81b9846535114e481d6096443d2)
Co-authored-by: Barney Gale <barney.gale@gmail.com>
It now returns multiple era description segments separated by semicolons.
Previously it only returned the first segment on platforms with Glibc.
(cherry picked from commit 4803cd0244847f286641c85591fda08b513cea52)
* Fix support of STRING and GLOBAL opcodes with non-ASCII arguments.
* dis() now outputs non-ASCII bytes in STRING, BINSTRING and
SHORT_BINSTRING arguments as escaped (\xXX).
(cherry picked from commit eaf217108226633c03cc5c4c90f0b6e4587c8803)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
This catches a memory leak in loading the BUILD opcode.
(cherry picked from commit addb225f3823b03774cddacce35214dd471bec46)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
GH-85168: Use filesystem encoding when converting to/from `file` URIs (GH-126852)
Adjust `urllib.request.url2pathname()` and `pathname2url()` to use the
filesystem encoding when quoting and unquoting file URIs, rather than
forcing use of UTF-8.
No changes are needed in the `nturl2path` module because Windows always
uses UTF-8, per PEP 529.
(cherry picked from commit c9b399fbdb01584dcfff0d7f6ad484644ff269c3)
Co-authored-by: Barney Gale <barney.gale@gmail.com>
If PyObject_SetItem() fails in the `load_build()` function of _pickle.c, no DECREF for the `dict` variable.
(cherry picked from commit 29cbcbd73bbfd8c953c0b213fb33682c289934ff)
Co-authored-by: Justin Applegate <70449145+Legoclones@users.noreply.github.com>
