https://github.com/python/cpython/commit/45c6c48afc13f9897010e32171a3e02d0624258c
commit: 45c6c48afc13f9897010e32171a3e02d0624258c
branch: main
author: Jelle Zijlstra <jelle.zijls...@gmail.com>
committer: encukou <encu...@gmail.com>
date: 2025-05-30T11:30:05+02:00
summary:
gh-134885: zstd: Use Py_XSETREF (GH-134886)
files:
A Misc/NEWS.d/next/Library/2025-05-29-06-53-40.gh-issue-134885.-_L22o.rst
M Modules/_zstd/_zstdmodule.c
diff --git
a/Misc/NEWS.d/next/Library/2025-05-29-06-53-40.gh-issue-134885.-_L22o.rst
b/Misc/NEWS.d/next/Library/2025-05-29-06-53-40.gh-issue-134885.-_L22o.rst
new file mode 100644
index 00000000000000..4b05d42c109d06
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-05-29-06-53-40.gh-issue-134885.-_L22o.rst
@@ -0,0 +1,2 @@
+Fix possible crash in the :mod:`compression.zstd` module related to setting
+parameter types. Patch by Jelle Zijlstra.
diff --git a/Modules/_zstd/_zstdmodule.c b/Modules/_zstd/_zstdmodule.c
index 5ad697d2b83dd6..986b3579479f0f 100644
--- a/Modules/_zstd/_zstdmodule.c
+++ b/Modules/_zstd/_zstdmodule.c
@@ -514,13 +514,10 @@ _zstd_set_parameter_types_impl(PyObject *module, PyObject
*c_parameter_type,
return NULL;
}
- Py_XDECREF(mod_state->CParameter_type);
- Py_INCREF(c_parameter_type);
- mod_state->CParameter_type = (PyTypeObject*)c_parameter_type;
-
- Py_XDECREF(mod_state->DParameter_type);
- Py_INCREF(d_parameter_type);
- mod_state->DParameter_type = (PyTypeObject*)d_parameter_type;
+ Py_XSETREF(
+ mod_state->CParameter_type,
(PyTypeObject*)Py_NewRef(c_parameter_type));
+ Py_XSETREF(
+ mod_state->DParameter_type,
(PyTypeObject*)Py_NewRef(d_parameter_type));
Py_RETURN_NONE;
}
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