gh-118074: Immortal executors are not GC-able (#118182)

Better version of gh-118117.
Just check for immortality instead of an address range check.

diff --git a/Python/optimizer.c b/Python/optimizer.c
index 5863336c0d9ecfeaf9b5a6121283b65a48e3e9ca..0017965c32f290b1e4532b57bac8b727a4c3a891 100644 (file)
--- a/Python/optimizer.c
+++ b/Python/optimizer.c
@@ -397,10 +397,7 @@ executor_traverse(PyObject *o, visitproc visit, void *arg)
 static int
 executor_is_gc(PyObject *o)
 {
-    if ((PyObject *)&COLD_EXITS[0] <= o && o < (PyObject *)&COLD_EXITS[COLD_EXIT_COUNT]) {
-        return 0;
-    }
-    return 1;
+    return !_Py_IsImmortal(o);
 }
 
 PyTypeObject _PyUOpExecutor_Type = {