From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Date: Wed, 17 Dec 2025 18:28:37 +0000 (+0100)
Subject: [3.14] gh-142873: Do not check for `PyContextVar_CheckExact` twice in `PyContextVar_S... 
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=338bdb24156ddf5d6f9af9dee444f7c2644bd28f;p=thirdparty%2FPython%2Fcpython.git

[3.14] gh-142873: Do not check for `PyContextVar_CheckExact` twice in `PyContextVar_Set` (GH-142874) (#142893)

gh-142873: Do not check for `PyContextVar_CheckExact` twice in `PyContextVar_Set` (GH-142874)
(cherry picked from commit e61a447d0e0753621e8fc347e99dfc87884d68ab)

Co-authored-by: sobolevn <mail@sobolevn.me>
---

diff --git a/Python/context.c b/Python/context.c
index d1f8b7c24821..56a35dc731ad 100644
--- a/Python/context.c
+++ b/Python/context.c
@@ -343,12 +343,6 @@ PyContextVar_Set(PyObject *ovar, PyObject *val)
     ENSURE_ContextVar(ovar, NULL)
     PyContextVar *var = (PyContextVar *)ovar;
 
-    if (!PyContextVar_CheckExact(var)) {
-        PyErr_SetString(
-            PyExc_TypeError, "an instance of ContextVar was expected");
-        return NULL;
-    }
-
     PyContext *ctx = context_get();
     if (ctx == NULL) {
         return NULL;
@@ -1024,12 +1018,6 @@ static PyObject *
 _contextvars_ContextVar_get_impl(PyContextVar *self, PyObject *default_value)
 /*[clinic end generated code: output=0746bd0aa2ced7bf input=30aa2ab9e433e401]*/
 {
-    if (!PyContextVar_CheckExact(self)) {
-        PyErr_SetString(
-            PyExc_TypeError, "an instance of ContextVar was expected");
-        return NULL;
-    }
-
     PyObject *val;
     if (PyContextVar_Get((PyObject *)self, default_value, &val) < 0) {
         return NULL;