1 files changed, 28 insertions, 0 deletions
diff --git a/Python/crossinterp.c b/Python/crossinterp.c
index 74f1d6ecef1..17c476ba436 100644
--- a/Python/crossinterp.c
+++ b/Python/crossinterp.c
@@ -586,6 +586,29 @@ _long_shared(PyThreadState *tstate, PyObject *obj,
 }
 
 static PyObject *
+_new_float_object(_PyCrossInterpreterData *data)
+{
+    double * value_ptr = data->data;
+    return PyFloat_FromDouble(*value_ptr);
+}
+
+static int
+_float_shared(PyThreadState *tstate, PyObject *obj,
+             _PyCrossInterpreterData *data)
+{
+    if (_PyCrossInterpreterData_InitWithSize(
+            data, tstate->interp, sizeof(double), NULL,
+            _new_float_object
+            ) < 0)
+    {
+        return -1;
+    }
+    double *shared = (double *)data->data;
+    *shared = PyFloat_AsDouble(obj);
+    return 0;
+}
+
+static PyObject *
 _new_none_object(_PyCrossInterpreterData *data)
 {
     // XXX Singleton refcounts are problematic across interpreters...
@@ -624,4 +647,9 @@ _register_builtins_for_crossinterpreter_data(struct _xidregistry *xidregistry)
     if (_xidregistry_add_type(xidregistry, &PyUnicode_Type, _str_shared) != 0) {
         Py_FatalError("could not register str for cross-interpreter sharing");
     }
+
+    // float
+    if (_xidregistry_add_type(xidregistry, &PyFloat_Type, _float_shared) != 0) {
+        Py_FatalError("could not register float for cross-interpreter sharing");
+    }
 }