The fix involves using pysqlite_check_remaining_sql(), not only to check
for multiple statements, but now also to strip leading comments and
whitespace from SQL statements, so we can improve DML query detection.
pysqlite_check_remaining_sql() is renamed lstrip_sql(), to more
accurately reflect its function, and hardened to handle more SQL comment
corner cases.
(cherry picked from commit 46740073ef)
Use C APIs such as PyModule_AddType instead of PyModule_AddObject.
Also remove incorrect module decrefs if module fails to initialise.
(cherry picked from commit a87c9b538f)
Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@protonmail.com>
The `utc_to_seconds` call can fail, here's a minimal reproducer on
Linux:
TZ=UTC python -c "from datetime import *; datetime.fromtimestamp(253402300799 + 1)"
The old behavior still raised an error in a similar way, but only
because subsequent calculations happened to fail as well. Better to fail
fast.
This also refactors the tests to split out the `fromtimestamp` and
`utcfromtimestamp` tests, and to get us closer to the actual desired
limits of the functions. As part of this, we also changed the way we
detect platforms where the same limits don't necessarily apply (e.g.
Windows).
As part of refactoring the tests to hit this condition explicitly (even
though the user-facing behvior doesn't change in any way we plan to
guarantee), I noticed that there was a difference in the places that
`datetime.utcfromtimestamp` fails in the C and pure Python versions, which
was fixed by skipping the "probe for fold" logic for UTC specifically —
since UTC doesn't have any folds or gaps, we were never going to find a
fold value anyway. This should prevent some failures in the pure python
`utcfromtimestamp` method on timestamps close to 0001-01-01.
There are two separate news entries for this because one is a
potentially user-facing change, the other is an internal code
correctness change that, if anything, changes some error messages. The
two happen to be coupled because of the test refactoring, but they are
probably best thought of as independent changes.
Fixes GH-91581
(cherry picked from commit 83c0247d47)
Co-authored-by: Paul Ganssle <1377457+pganssle@users.noreply.github.com>
* [3.10] bpo-46785: Fix race condition between os.stat() and unlink on Windows (GH-31858).
(cherry picked from commit 39e6b8ae6a)
Co-authored-by: Itai Steinherz <itaisteinherz@gmail.com>
Fix a crash in subinterpreters related to the garbage collector. When
a subinterpreter is deleted, untrack all objects tracked by its GC.
To prevent a crash in deallocator functions expecting objects to be
tracked by the GC, leak a strong reference to these objects on
purpose, so they are never deleted and their deallocator functions
are not called.
(cherry picked from commit 14243369b5)
Co-authored-by: Victor Stinner <vstinner@python.org>
This does not alter the `_posixsubprocess.fork_exec()` private API to
avoid issues for anyone relying on that (bad idea) or for anyone who's
`subprocess.py` and `_posixsubprocess.so` upgrades may not become
visible to existing Python 3.10 processes at the same time.
Backports the concept of cd5726fe67.
Provides a fail-safe way to disable vfork for #91401.
I didn't backport the documentation as I don't actually expect this to be used and `.. versionadded: 3.10.5` always looks weird in docs. It's being done more to have a fail-safe in place for people just in case.
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.
(cherry picked from commit 4a08c4c469)
Co-authored-by: Gregory P. Smith <greg@krypto.org>
For consistency, replace "a SQL" with "an SQL"..
(cherry picked from commit 2d5835a019)
Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>
In Linux kernel 5.14 one can dynamically request size of altstacksize
based on hardware capabilities with getauxval(AT_MINSIGSTKSZ).
This changes allows for Python extension's request to Linux kernel
to use AMX_TILE instruction set on Sapphire Rapids Xeon processor
to succeed, unblocking use of the ISA in frameworks.
Introduced HAVE_LINUX_AUXVEC_H in configure.ac and pyconfig.h.in
Used cpython_autoconf:269 docker container to generate configure.
(cherry picked from commit 3b128c0548)
Co-authored-by: Oleksandr Pavlyk <oleksandr.pavlyk@intel.com>
Replace two instances of "pysqlite" with "sqlite3" in sqlite3
docstrings. Also reword "is a no-op" to "does nothing" for clarity..
(cherry picked from commit b33a1ae703)
Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>
* bpo-46913: Fix test_faulthandler.test_sigfpe() on UBSAN (GH-31662)
Disable undefined behavior sanitizer (UBSAN) on
faulthandler_sigfpe().
(cherry picked from commit 4173d677a1)
* bpo-46913: Fix test_faulthandler.test_read_null() on UBSan (GH31672)
Disable undefined behavior sanitizer (UBSan) on
faulthandler._read_null().
(cherry picked from commit 65b92ccdec)
* bpo-46913: test_hashlib skips _sha3 tests on UBSan (GH-31673)
If Python is built with UBSan, test_hashlib skips tests on the _sha3
extension which currently has undefined behaviors.
This change allows to run test_hashlib to check for new UBSan regression,
but the known _sha3 undefined behavior must be fixed.
(cherry picked from commit 6d0d7d2b8c)
* bpo-46913: Skip test_ctypes.test_shorts() on UBSan (GH-31674)
If Python is built with UBSan, test_ctypes now skips test_shorts().
This change allows to run test_ctypes to check for new UBSan regression,
but the known test_shorts() undefined behavior must be fixed.
(cherry picked from commit ad1b04451d)
* [3.10] bpo-43853: Expand test suite for SQLite UDF's (GH-27642).
(cherry picked from commit 3eb3b4f270)
Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>
* Fix test_func_return_too_large_int
GH-27613 (bpo 44839) was not backported, so exceptions differ between
main (3.11) and older versions.
The libexpat 2.4.1 upgrade from introduced the following new exported symbols:
* `testingAccountingGetCountBytesDirect`
* `testingAccountingGetCountBytesIndirect`
* `unsignedCharToPrintable`
* `XML_SetBillionLaughsAttackProtectionActivationThreshold`
* `XML_SetBillionLaughsAttackProtectionMaximumAmplification`
We need to adjust [Modules/expat/pyexpatns.h](https://github.com/python/cpython/blob/master/Modules/expat/pyexpatns.h)
(The newer libexpat upgrade has no new symbols).
Automerge-Triggered-By: GH:gpshead
(cherry picked from commit 6312c1052c)
Co-authored-by: Yilei "Dolee" Yang <yileiyang@google.com>
Co-authored-by: Yilei "Dolee" Yang <yileiyang@google.com>
Test if tracemalloc_copy_traces() failed to allocated memory in
tracemalloc_copy_domain().
(cherry picked from commit 7c770d3350)
Co-authored-by: Victor Stinner <vstinner@python.org>
