1 files changed, 29 insertions, 8 deletions

diff --git a/Modules/_io/textio.c b/Modules/_io/textio.c
index 283411b..5d2438d 100644
--- a/Modules/_io/textio.c
+++ b/Modules/_io/textio.c
@@ -173,7 +173,8 @@ PyTypeObject PyTextIOBase_Type = {
     0,                          /*tp_getattro*/
     0,                          /*tp_setattro*/
     0,                          /*tp_as_buffer*/
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,  /*tp_flags*/
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE
+        | Py_TPFLAGS_HAVE_FINALIZE,  /*tp_flags*/
     textiobase_doc,             /* tp_doc */
     0,                          /* tp_traverse */
     0,                          /* tp_clear */
@@ -192,6 +193,16 @@ PyTypeObject PyTextIOBase_Type = {
     0,                          /* tp_init */
     0,                          /* tp_alloc */
     0,                          /* tp_new */
+    0,                          /* tp_free */
+    0,                          /* tp_is_gc */
+    0,                          /* tp_bases */
+    0,                          /* tp_mro */
+    0,                          /* tp_cache */
+    0,                          /* tp_subclasses */
+    0,                          /* tp_weaklist */
+    0,                          /* tp_del */
+    0,                          /* tp_version_tag */
+    0,                          /* tp_finalize */
 };
 
 
@@ -691,7 +702,7 @@ typedef struct
     char seekable;
     char has_read1;
     char telling;
-    char deallocating;
+    char finalizing;
     /* Specialized encoding func (see below) */
     encodefunc_t encodefunc;
     /* Whether or not it's the start of the stream */
@@ -1112,8 +1123,6 @@ textiowrapper_init(textio *self, PyObject *args, PyObject *kwds)
 static int
 _textiowrapper_clear(textio *self)
 {
-    if (self->ok && _PyIOBase_finalize((PyObject *) self) < 0)
-        return -1;
     self->ok = 0;
     Py_CLEAR(self->buffer);
     Py_CLEAR(self->encoding);
@@ -1131,9 +1140,10 @@ _textiowrapper_clear(textio *self)
 static void
 textiowrapper_dealloc(textio *self)
 {
-    self->deallocating = 1;
-    if (_textiowrapper_clear(self) < 0)
+    self->finalizing = 1;
+    if (_PyIOBase_finalize((PyObject *) self) < 0)
         return;
+    _textiowrapper_clear(self);
     _PyObject_GC_UNTRACK(self);
     if (self->weakreflist != NULL)
         PyObject_ClearWeakRefs((PyObject *)self);
@@ -2573,7 +2583,7 @@ textiowrapper_close(textio *self, PyObject *args)
     }
     else {
         PyObject *exc = NULL, *val, *tb;
-        if (self->deallocating) {
+        if (self->finalizing) {
             res = _PyObject_CallMethodId(self->buffer, &PyId__dealloc_warn, "O", self);
             if (res)
                 Py_DECREF(res);
@@ -2734,6 +2744,7 @@ static PyMemberDef textiowrapper_members[] = {
     {"encoding", T_OBJECT, offsetof(textio, encoding), READONLY},
     {"buffer", T_OBJECT, offsetof(textio, buffer), READONLY},
     {"line_buffering", T_BOOL, offsetof(textio, line_buffering), READONLY},
+    {"_finalizing", T_BOOL, offsetof(textio, finalizing), 0},
     {NULL}
 };
 
@@ -2770,7 +2781,7 @@ PyTypeObject PyTextIOWrapper_Type = {
     0,                          /*tp_setattro*/
     0,                          /*tp_as_buffer*/
     Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE
-            | Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+        | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_HAVE_FINALIZE, /*tp_flags*/
     textiowrapper_doc,          /* tp_doc */
     (traverseproc)textiowrapper_traverse, /* tp_traverse */
     (inquiry)textiowrapper_clear, /* tp_clear */
@@ -2789,4 +2800,14 @@ PyTypeObject PyTextIOWrapper_Type = {
     (initproc)textiowrapper_init, /* tp_init */
     0,                          /* tp_alloc */
     PyType_GenericNew,          /* tp_new */
+    0,                          /* tp_free */
+    0,                          /* tp_is_gc */
+    0,                          /* tp_bases */
+    0,                          /* tp_mro */
+    0,                          /* tp_cache */
+    0,                          /* tp_subclasses */
+    0,                          /* tp_weaklist */
+    0,                          /* tp_del */
+    0,                          /* tp_version_tag */
+    0,                          /* tp_finalize */
 };