1 files changed, 11 insertions, 0 deletions
diff --git a/Objects/funcobject.c b/Objects/funcobject.c
index 32b4155..7f257a9 100644
--- a/Objects/funcobject.c
+++ b/Objects/funcobject.c
@@ -134,6 +134,9 @@ uint32_t _PyFunction_GetVersionForCurrentState(PyFunctionObject *func)
     if (func->func_version != 0) {
         return func->func_version;
     }
+    if (func->vectorcall != _PyFunction_Vectorcall) {
+        return 0;
+    }
     if (next_func_version == 0) {
         return 0;
     }
@@ -209,6 +212,14 @@ PyFunction_SetDefaults(PyObject *op, PyObject *defaults)
     return 0;
 }
 
+void
+PyFunction_SetVectorcall(PyFunctionObject *func, vectorcallfunc vectorcall)
+{
+    assert(func != NULL);
+    func->func_version = 0;
+    func->vectorcall = vectorcall;
+}
+
 PyObject *
 PyFunction_GetKwDefaults(PyObject *op)
 {