Issue #27006: from_float(): call the subclass' __new__() and __init__().

1 files changed, 8 insertions, 2 deletions

diff --git a/Modules/_decimal/_decimal.c b/Modules/_decimal/_decimal.c
index 112b44fda7..e69d715bb2 100644
--- a/Modules/_decimal/_decimal.c
+++ b/Modules/_decimal/_decimal.c
@@ -2630,12 +2630,18 @@ PyDecType_FromSequenceExact(PyTypeObject *type, PyObject *v,
 
 /* class method */
 static PyObject *
-dec_from_float(PyObject *dec, PyObject *pyfloat)
+dec_from_float(PyObject *type, PyObject *pyfloat)
 {
     PyObject *context;
+    PyObject *result;
 
     CURRENT_CONTEXT(context);
-    return PyDecType_FromFloatExact((PyTypeObject *)dec, pyfloat, context);
+    result = PyDecType_FromFloatExact(&PyDec_Type, pyfloat, context);
+    if (!PyDec_CheckExact(type) && result != NULL) {
+        Py_SETREF(result, PyObject_CallFunctionObjArgs(type, result, NULL));
+    }
+
+    return result;
 }
 
 /* create_decimal_from_float */