1 files changed, 4 insertions, 0 deletions
diff --git a/Python/pylifecycle.c b/Python/pylifecycle.c
index cf8b4379c14..f91fac9379e 100644
--- a/Python/pylifecycle.c
+++ b/Python/pylifecycle.c
@@ -1192,7 +1192,11 @@ init_interp_main(PyThreadState *tstate)
         }
         if (enabled) {
             PyObject *opt = PyUnstable_Optimizer_NewUOpOptimizer();
+            if (opt == NULL) {
+                return _PyStatus_ERR("can't initialize optimizer");
+            }
             PyUnstable_SetOptimizer((_PyOptimizerObject *)opt);
+            Py_DECREF(opt);
         }
     }