Fix downcast compiler warning in Modules/_testcapi/vectorcall.c (#95729)

diff --git a/Modules/_testcapi/vectorcall.c b/Modules/_testcapi/vectorcall.c
index 21846f97ff81210f6752f1e250e11a5ec95482c0..626706eafab5e8ba9f44ef4878e124d2e66a3e5f 100644 (file)
--- a/Modules/_testcapi/vectorcall.c
+++ b/Modules/_testcapi/vectorcall.c
@@ -214,7 +214,7 @@ _testcapi_make_vectorcall_class_impl(PyObject *module, PyTypeObject *base)
     VectorCallClass_members[0].offset = base->tp_basicsize;
     PyType_Spec spec = {
         .name = "_testcapi.VectorcallClass",
-        .basicsize = base->tp_basicsize + (int)sizeof(vectorcallfunc),
+        .basicsize = (int)(base->tp_basicsize + sizeof(vectorcallfunc)),
         .flags = Py_TPFLAGS_DEFAULT
             | Py_TPFLAGS_HAVE_VECTORCALL
             | Py_TPFLAGS_BASETYPE,