[Python-checkins] [3.14] gh-136288: Fix error message in `_testcapi/vectorcall.c` (GH-136258) (GH-136294)

[ZeroIntensity]

https://github.com/python/cpython/commit/6d21cc54fffbe56df3372f65227160bf27807158
commit: 6d21cc54fffbe56df3372f65227160bf27807158
branch: 3.14
author: Miss Islington (bot) <31488909+miss-isling...@users.noreply.github.com>
committer: ZeroIntensity <zintensity...@gmail.com>
date: 2025-07-04T16:18:32Z
summary:

[3.14] gh-136288: Fix error message in `_testcapi/vectorcall.c` (GH-136258) 
(GH-136294)

gh-136288: Fix error message in `_testcapi/vectorcall.c` (GH-136258)

Use the %N format specifier instead of %s and `PyType_GetName`.
(cherry picked from commit d1d5dce14f90d777608e4403d09079421ff55944)

Co-authored-by: William S Fulton <w...@fultondesigns.co.uk>

files:
M Modules/_testcapi/vectorcall.c

diff --git a/Modules/_testcapi/vectorcall.c b/Modules/_testcapi/vectorcall.c
index 03aaacb328e0b6..f89dcb6c4cf03c 100644
--- a/Modules/_testcapi/vectorcall.c
+++ b/Modules/_testcapi/vectorcall.c
@@ -179,14 +179,14 @@ _testcapi_VectorCallClass_set_vectorcall_impl(PyObject 
*self,
     if (!PyObject_TypeCheck(self, type)) {
         return PyErr_Format(
             PyExc_TypeError,
-            "expected %s instance",
-            PyType_GetName(type));
+            "expected %N instance",
+            type);
     }
     if (!type->tp_vectorcall_offset) {
         return PyErr_Format(
             PyExc_TypeError,
-            "type %s has no vectorcall offset",
-            PyType_GetName(type));
+            "type %N has no vectorcall offset",
+            type);
     }
     *(vectorcallfunc*)((char*)self + type->tp_vectorcall_offset) = (
         VectorCallClass_vectorcall);

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