Add missing Py_DECREF in fast_cfunction. Partial fix for SF bug

#127699.

diff --git a/Python/ceval.c b/Python/ceval.c
index 1559456e6bf9344721635ff20d4c8e3917c0f962..5110746441d57f941d55b71ace55188eb6a8f221 100644 (file)
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -2769,9 +2769,12 @@ fast_cfunction(PyObject *func, PyObject ***pp_stack, int na)
 
        if (na == 0)
                return (*meth)(self, NULL);
-       else if (na == 1)
-               return (*meth)(self, EXT_POP(*pp_stack));
-       else {
+       else if (na == 1) {
+               PyObject *arg = EXT_POP(*pp_stack);
+               PyObject *result =  (*meth)(self, arg); 
+               Py_DECREF(arg);
+               return result;
+       } else {
                PyObject *args = load_args(pp_stack, na);
                PyObject *result = (*meth)(self, args);
                Py_DECREF(args);