BUG: avoid thread-unsafe refcount check in temp elision #29685
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hswong3i
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Sep 10, 2025
git clean -xdf
git submodule sync --recursive
git submodule update --recursive --init
git submodule foreach --recursive git checkout -- .
tar zcvf ../python-numpy_2.3.3.orig.tar.gz --exclude=.git .
debuild -uc -us
cp python-numpy.spec ../python-numpy_2.3.3-1.spec
cp ../python*-numpy*2.3.3*.{gz,xz,spec,dsc} /osc/home\:alvistack/numpy-numpy-2.3.3/
rm -rf ../python*-numpy*2.3.3*.*
See numpy#27405
See numpy#29685
Signed-off-by: Wong Hoi Sing Edison <[email protected]>
hswong3i
added a commit
to alvistack/numpy-numpy
that referenced
this pull request
Sep 10, 2025
git clean -xdf
git submodule sync --recursive
git submodule update --recursive --init
git submodule foreach --recursive git checkout -- .
tar zcvf ../python-numpy_2.3.3.orig.tar.gz --exclude=.git .
debuild -uc -us
cp python-numpy.spec ../python-numpy_2.3.3-1.spec
cp ../python*-numpy*2.3.3*.{gz,xz,spec,dsc} /osc/home\:alvistack/numpy-numpy-2.3.3/
rm -rf ../python*-numpy*2.3.3*.*
See numpy#27405
See numpy#29685
Signed-off-by: Wong Hoi Sing Edison <[email protected]>
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Backport of #29649.
Checking
Py_REFCNT == 1is thread-unsafe on the free-threaded build, since refcounts are stored and loaded in free-threading using atomic operations.Python 3.14 added
PyUnstable_Object_IsUniquelyReferencedto replace static refcount checks. I added a backport to pythoncapi-compat in python/pythoncapi-compat#149, which allows me to use the function unconditionally and get correct behavior on 3.13t as well. This relies on some private implementation details on 3.13t, but all that is done in the compat header.