Define Py_GenericAliasType

Author: msimacek

graalpython/com.oracle.graal.python.cext/src/capi.h

@@ -342,6 +342,7 @@ PY_TRUFFLE_TYPE(UnionType_Type, 		"_ctypes.UnionType",		&PyType_Type, sizeof(PyO
 PY_TRUFFLE_TYPE(PyCPointerType_Type,	"PyCPointerType", 		    &PyType_Type, sizeof(PyObject)) \
 PY_TRUFFLE_TYPE(PyCArrayType_Type,		"PyCArrayType", 			&PyType_Type, sizeof(PyObject)) \
 PY_TRUFFLE_TYPE(PyCoro_Type, 			"coroutine", 				&PyType_Type, sizeof(PyCoroObject)) \
+PY_TRUFFLE_TYPE(Py_GenericAliasType,    "types.GenericAlias", 		&PyType_Type, sizeof(PyObject)) \
 /* PyPickleBufferObject (PyObject_HEAD + Py_buffer + PyObject*) is defined within Objects/picklebufobject.c, so its not exposed. */ \
 PY_TRUFFLE_TYPE(PyPickleBuffer_Type, 	"_pickle.PickleBuffer",     &PyType_Type, sizeof(PyPickleBufferObject)) \
 PY_TRUFFLE_TYPE_UNIMPLEMENTED(_PyAIterWrapper_Type) \

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/cext/PythonCextBuiltins.java

@@ -1705,7 +1705,11 @@ private static PythonManagedClass lookupBuiltinTypeWithName(PythonContext contex
                 }
                 Object attribute = PyObjectGetAttr.getUncached().execute(null, moduleObject, toTruffleStringUncached(name));
                 if (attribute != PNone.NO_VALUE) {
-                    clazz = (PythonManagedClass) attribute;
+                    if (attribute instanceof PythonBuiltinClassType builtinType) {
+                        clazz = core.lookupType(builtinType);
+                    } else {
+                        clazz = (PythonManagedClass) attribute;
+                    }
                 }
 
             }