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[3.14] gh-134885: zstd: Use Py_XSETREF (GH-134886) (GH-134922)

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(cherry picked from commit 45c6c48afc)

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
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Miss Islington (bot) 2025-05-30 12:50:42 +02:00 • committed by GitHub
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2
Misc/NEWS.d/next/Library/2025-05-29-06-53-40.gh-issue-134885.-_L22o.rst Normal file
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@ -0,0 +1,2 @@
Fix possible crash in the :mod:`compression.zstd` module related to setting
parameter types. Patch by Jelle Zijlstra.

11
Modules/_zstd/_zstdmodule.c
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@ -514,13 +514,10 @@ _zstd_set_parameter_types_impl(PyObject *module, PyObject *c_parameter_type,
return NULL; return NULL;
} }
Py_XDECREF(mod_state->CParameter_type); Py_XSETREF(
Py_INCREF(c_parameter_type); mod_state->CParameter_type, (PyTypeObject*)Py_NewRef(c_parameter_type));
mod_state->CParameter_type = (PyTypeObject*)c_parameter_type; Py_XSETREF(
mod_state->DParameter_type, (PyTypeObject*)Py_NewRef(d_parameter_type));
Py_XDECREF(mod_state->DParameter_type);
Py_INCREF(d_parameter_type);
mod_state->DParameter_type = (PyTypeObject*)d_parameter_type;
Py_RETURN_NONE; Py_RETURN_NONE;
} }