gh-144173: fix flaky test_complex.test_truediv() (GH-144355)
Previously, component-wise relative error bound was tested. However,
such bound can't exist already for complex multiplication as one can be
used to perform subtraction of floating-point numbers, e.g. x and y for
z0=1+1j and z1=x+yj.
```pycon
>>> x, y = 1e-9+1j, 1+1j
>>> a = x*y*y.conjugate()/2;a
(1.0000000272292198e-09+1j)
>>> b = x*(y*y.conjugate()/2);b
(1e-09+1j)
>>> b == x
True
>>> (a.real-b.real)/math.ulp(b.real)
131672427.0
```
(cherry picked from commit c4333a12708a917d1cfb6418c04be45793ecc392)
Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
Only set the format attribute after successful (re-)initialization.
(cherry picked from commit 3f33bf83e8496737b86333bc9ec55dc3ccb3faca)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Docs: Improve the C API documentation involving threads (GH-145520)
(cherry picked from commit 7990313afa3234d5145b32ead3ef3f6278735f4f)
Co-authored-by: Peter Bierma <zintensitydev@gmail.com>
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Savannah Ostrowski <savannah@python.org>
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
Co-authored-by: Stan Ulbrych <stan@ulbrych.org>
We already have a stop-the-world pause elsewhere in this code path
(type_set_bases) and this makes will make it easier to avoid contention
on the TYPE_LOCK when looking up names in the MRO hierarchy.
Also use deferred reference counting for non-immortal MROs.
(cherry picked from commit 0b65c88c2af6e09530a9aa21800771aa687371db)
gh-142651: use `NonCallableMock._lock` for thread safety of `call_count` (GH-142922)
(cherry picked from commit 728e4a075e3dae7e04edf90ad137a35073deb141)
Co-authored-by: Kumar Aditya <kumaraditya@python.org>
(cherry picked from commit 63eaaf95999c530cbd75b3addc3e660499d3adbe)
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
* Add `:oss-fuzz:` supports
Backports part of 255e79fa95.
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
Fix three issues that caused mimalloc pages to be leaked until the
owning thread exited:
1. In _PyMem_mi_page_maybe_free(), move pages out of the full queue
when relying on QSBR to defer freeing the page. Pages in the full
queue are never searched by mi_page_queue_find_free_ex(), so a page
left there is unusable for allocations.
2. Move _PyMem_mi_page_clear_qsbr() from _mi_page_free_collect() to
_mi_page_thread_free_collect() where it only fires when all blocks
on the page are free (used == 0). The previous placement was too
broad: it cleared QSBR state whenever local_free was non-NULL, but
_mi_page_free_collect() is called from non-allocation paths (e.g.,
page visiting in mi_heap_visit_blocks) where the page is not being
reused.
3. In _PyMem_mi_page_maybe_free(), use the page's heap tld to find the
correct thread state for QSBR list insertion instead of
PyThreadState_GET(). During stop-the-world pauses, the function may
process pages belonging to other threads, so the current thread
state is not necessarily the owner of the page.
(cherry picked from commit d76df75f51e662fd15ebe00e107058841de94860)
Co-authored-by: Sam Gross <colesbury@gmail.com>
Modifies the Emscripten build script to allow for custom cross-build directory
names, and to only clean Emscripten-specific paths (optionally including the
build python).
(cherry picked from commit 015613384fea7a00bb2077760e325e5baab6814b)
Co-authored-by: Hood Chatham <roberthoodchatham@gmail.com>
Co-authored-by: Russell Keith-Magee <russell@keith-magee.com>
gh-145642: Docs: Avoid warning for invalid escape sequence in tutorial (GH-145643)
---------
(cherry picked from commit 5a15a52dd1dee37af4f2b3a6b15a9f5735f75c6e)
Co-authored-by: James <snoopjedi@gmail.com>
Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>
Adds an `--emsdk-cache` argument to the Emscripten build script and an
emscripten_version.txt file. If the `--emsdk-cache` argument is passed, the build script
will look in `emscripten_version.txt` to get the expected emsdk version is installed in
a folder called e.g., 4.0.12 in the directory indicated by the `--emsdk-cache` argument,
and run the build with that Emscripten tooling activated.
(cherry picked from commit c3fb0d9d96902774c08b199dda0479a8d31398a5)
Co-authored-by: Hood Chatham <roberthoodchatham@gmail.com>
gh-145376: Fix crashes in `md5module.c` and `hmacmodule.c` (GH-145422)
Fix a possible NULL pointer dereference in `md5module.c` and a double-free in `hmacmodule.c`.
Those crashes only occur in error paths taken when the interpreter fails to allocate memory.
(cherry picked from commit c1d77683213c400fca144692654845e6f5418981)
Co-authored-by: Pieter Eendebak <pieter.eendebak@gmail.com>
gh-145548: Use VMADDR_CID_LOCAL in VSOCK socket tests (GH-145589)
Prefer VMADDR_CID_LOCAL instead of VMADDR_CID_ANY for bind() in the
server. Skip the test if bind() fails with EADDRNOTAVAIL.
Log vsock CID in test.pythoninfo.
(cherry picked from commit 6c8c72f7feb4207c62ac857443943e61977d6a94)
Co-authored-by: Victor Stinner <vstinner@python.org>
gh-144370: Disallow usage of control characters in status in wsgiref.handlers for security (GH-144371)
Disallow usage of control characters in status in wsgiref.handlers
to prevent HTTP header injections.
(cherry picked from commit d931725bc850cd096f6703bc285e885f1e015f05)
Co-authored-by: Benedikt Johannes <benedikt.johannes.hofer@gmail.com>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Victor Stinner <vstinner@python.org>
Adds _PYLAUNCHER_INIDIR as a private variable since the launcher is deprecated and not getting new features.
(cherry picked from commit 6cdbd7bc5d4ee63459d03a944477ea8671a05198)
Co-authored-by: Itamar Oren <itamarost@gmail.com>
Docs: use a Sphinx extension to eliminate excessive links (GH-145130)
(cherry picked from commit 15f6479c415cc6cd219cd25c1d94bab17d720cbc)
Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>
gh-145557: Check ctypes is available in test_external_inspection (GH-145558)
Currently TestGetStackTrace.test_self_trace_after_ctypes_import() will fail if
the _ctypes extension is not built. Make it match test_ctypes by skipping
the test in that case.
(cherry picked from commit 7232883adfc28f94a62d2e79c897db59711702d7)
Co-authored-by: Alex Malyshev <lex.malyshev@gmail.com>
The handle parameter was being ignored in the POSIX implementation
of CDLL._load_library(), causing it to always call _dlopen() even
when a valid handle was provided. This was a regression introduced
in recent refactoring.
(cherry picked from commit 27ded243485670fa836c9bb421e37a6ef16eca8e)
Co-authored-by: Arjit Singh Grover <143692910+Koolvansh07@users.noreply.github.com>
Co-authored-by: Petr Viktorin <encukou@gmail.com>
GH-144739: Skip test_pyexpat.MemoryProtectionTest based on expat compile-time version, not runtime (#144740)
(cherry picked from commit 45e9343d7eed1d9e784e731cc9af853fa8649e59)
Co-authored-by: Miro Hrončok <miro@hroncok.cz>
gh-145455: Show output of blurb & sphinx-build version commands (GH-145457)
In gh-145455, an outdated dependency caused an import error that was not
printed out (`2>&1`); the message instead said that the tools are missing.
Don't redirect stderr, to show warnings and failures.
Also, switch `blurb` to output a version on a single line (`--version` rather
than `help`), and, and don't redirect stdout either.
This results in two version info lines being printed out. These get drowned
in typical Sphinx output, and can be helpful when debugging.
(cherry picked from commit f1de65b3669226d563802a32b78a2294e971151a)
Co-authored-by: Petr Viktorin <encukou@gmail.com>
gh-145335: Fix crash when passing -1 as fd in os.pathconf (GH-145390)
(cherry picked from commit 5c3a47b94a39f87c36b1f36704d80775802ad034)
Co-authored-by: AN Long <aisk@users.noreply.github.com>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
