Restoring authorship annotation for <shadchin@yandex-team.ru>. Commit 1 of 2.

1 files changed, 258 insertions, 258 deletions

diff --git a/contrib/tools/python3/src/Objects/structseq.c b/contrib/tools/python3/src/Objects/structseq.c
index 5a493c91e8..509abac580 100644
--- a/contrib/tools/python3/src/Objects/structseq.c
+++ b/contrib/tools/python3/src/Objects/structseq.c
@@ -1,16 +1,16 @@
-/* Implementation helper: a struct that looks like a tuple.
-   See timemodule and posixmodule for example uses.
-
-   The structseq helper is considered an internal CPython implementation
-   detail.  Docs for modules using structseqs should call them
-   "named tuples" (be sure to include a space between the two
-   words and add a link back to the term in Docs/glossary.rst).
-*/
-
+/* Implementation helper: a struct that looks like a tuple. 
+   See timemodule and posixmodule for example uses. 
+
+   The structseq helper is considered an internal CPython implementation 
+   detail.  Docs for modules using structseqs should call them 
+   "named tuples" (be sure to include a space between the two 
+   words and add a link back to the term in Docs/glossary.rst). 
+*/ 
+ 
 #include "Python.h"
-#include "pycore_tupleobject.h"
-#include "pycore_object.h"
-#include "structmember.h"         // PyMemberDef
+#include "pycore_tupleobject.h" 
+#include "pycore_object.h" 
+#include "structmember.h"         // PyMemberDef 
 
 static const char visible_length_key[] = "n_sequence_fields";
 static const char real_length_key[] = "n_fields";
@@ -18,7 +18,7 @@ static const char unnamed_fields_key[] = "n_unnamed_fields";
 
 /* Fields with this name have only a field index, not a field name.
    They are only allowed for indices < n_visible_fields. */
-const char * const PyStructSequence_UnnamedField = "unnamed field";
+const char * const PyStructSequence_UnnamedField = "unnamed field"; 
 _Py_IDENTIFIER(n_sequence_fields);
 _Py_IDENTIFIER(n_fields);
 _Py_IDENTIFIER(n_unnamed_fields);
@@ -47,7 +47,7 @@ PyStructSequence_New(PyTypeObject *type)
         return NULL;
     /* Hack the size of the variable object, so invisible fields don't appear
      to Python code. */
-    Py_SET_SIZE(obj, VISIBLE_SIZE_TP(type));
+    Py_SET_SIZE(obj, VISIBLE_SIZE_TP(type)); 
     for (i = 0; i < size; i++)
         obj->ob_item[i] = NULL;
 
@@ -66,37 +66,37 @@ PyStructSequence_GetItem(PyObject* op, Py_ssize_t i)
     return PyStructSequence_GET_ITEM(op, i);
 }
 
-
-static int
-structseq_traverse(PyStructSequence *obj, visitproc visit, void *arg)
-{
-    if (Py_TYPE(obj)->tp_flags & Py_TPFLAGS_HEAPTYPE) {
-        Py_VISIT(Py_TYPE(obj));
-    }
-    Py_ssize_t i, size;
-    size = REAL_SIZE(obj);
-    for (i = 0; i < size; ++i) {
-        Py_VISIT(obj->ob_item[i]);
-    }
-    return 0;
-}
-
+ 
+static int 
+structseq_traverse(PyStructSequence *obj, visitproc visit, void *arg) 
+{ 
+    if (Py_TYPE(obj)->tp_flags & Py_TPFLAGS_HEAPTYPE) { 
+        Py_VISIT(Py_TYPE(obj)); 
+    } 
+    Py_ssize_t i, size; 
+    size = REAL_SIZE(obj); 
+    for (i = 0; i < size; ++i) { 
+        Py_VISIT(obj->ob_item[i]); 
+    } 
+    return 0; 
+} 
+ 
 static void
 structseq_dealloc(PyStructSequence *obj)
 {
     Py_ssize_t i, size;
-    PyTypeObject *tp;
-    PyObject_GC_UnTrack(obj);
+    PyTypeObject *tp; 
+    PyObject_GC_UnTrack(obj); 
 
-    tp = (PyTypeObject *) Py_TYPE(obj);
+    tp = (PyTypeObject *) Py_TYPE(obj); 
     size = REAL_SIZE(obj);
     for (i = 0; i < size; ++i) {
         Py_XDECREF(obj->ob_item[i]);
     }
     PyObject_GC_Del(obj);
-    if (PyType_GetFlags(tp) & Py_TPFLAGS_HEAPTYPE) {
-        Py_DECREF(tp);
-    }
+    if (PyType_GetFlags(tp) & Py_TPFLAGS_HEAPTYPE) { 
+        Py_DECREF(tp); 
+    } 
 }
 
 /*[clinic input]
@@ -110,12 +110,12 @@ class structseq "PyStructSequence *" "NULL"
 @classmethod
 structseq.__new__ as structseq_new
     sequence as arg: object
-    dict: object(c_default="NULL") = {}
+    dict: object(c_default="NULL") = {} 
 [clinic start generated code]*/
 
 static PyObject *
 structseq_new_impl(PyTypeObject *type, PyObject *arg, PyObject *dict)
-/*[clinic end generated code: output=baa082e788b171da input=90532511101aa3fb]*/
+/*[clinic end generated code: output=baa082e788b171da input=90532511101aa3fb]*/ 
 {
     PyObject *ob;
     PyStructSequence *res = NULL;
@@ -189,7 +189,7 @@ structseq_new_impl(PyTypeObject *type, PyObject *arg, PyObject *dict)
     }
 
     Py_DECREF(arg);
-    _PyObject_GC_TRACK(res);
+    _PyObject_GC_TRACK(res); 
     return (PyObject*) res;
 }
 
@@ -198,89 +198,89 @@ static PyObject *
 structseq_repr(PyStructSequence *obj)
 {
     PyTypeObject *typ = Py_TYPE(obj);
-    _PyUnicodeWriter writer;
-
-    /* Write "typename(" */
-    PyObject *type_name = PyUnicode_DecodeUTF8(typ->tp_name,
-                                               strlen(typ->tp_name),
-                                               NULL);
-    if (type_name == NULL) {
-        return NULL;
-    }
-
-    _PyUnicodeWriter_Init(&writer);
-    writer.overallocate = 1;
-    /* count 5 characters per item: "x=1, " */
-    writer.min_length = (PyUnicode_GET_LENGTH(type_name) + 1
-                         + VISIBLE_SIZE(obj) * 5 + 1);
-
-    if (_PyUnicodeWriter_WriteStr(&writer, type_name) < 0) {
-        Py_DECREF(type_name);
-        goto error;
-    }
-    Py_DECREF(type_name);
-
-    if (_PyUnicodeWriter_WriteChar(&writer, '(') < 0) {
-        goto error;
-    }
-
-    for (Py_ssize_t i=0; i < VISIBLE_SIZE(obj); i++) {
-        if (i > 0) {
-            /* Write ", " */
-            if (_PyUnicodeWriter_WriteASCIIString(&writer, ", ", 2) < 0) {
-                goto error;
-            }
-        }
-
-        /* Write "name=repr" */
-        const char *name_utf8 = typ->tp_members[i].name;
-        if (name_utf8 == NULL) {
-            PyErr_Format(PyExc_SystemError, "In structseq_repr(), member %zd name is NULL"
+    _PyUnicodeWriter writer; 
+
+    /* Write "typename(" */ 
+    PyObject *type_name = PyUnicode_DecodeUTF8(typ->tp_name, 
+                                               strlen(typ->tp_name), 
+                                               NULL); 
+    if (type_name == NULL) { 
+        return NULL; 
+    } 
+
+    _PyUnicodeWriter_Init(&writer); 
+    writer.overallocate = 1; 
+    /* count 5 characters per item: "x=1, " */ 
+    writer.min_length = (PyUnicode_GET_LENGTH(type_name) + 1 
+                         + VISIBLE_SIZE(obj) * 5 + 1); 
+ 
+    if (_PyUnicodeWriter_WriteStr(&writer, type_name) < 0) { 
+        Py_DECREF(type_name); 
+        goto error; 
+    } 
+    Py_DECREF(type_name); 
+ 
+    if (_PyUnicodeWriter_WriteChar(&writer, '(') < 0) { 
+        goto error; 
+    } 
+
+    for (Py_ssize_t i=0; i < VISIBLE_SIZE(obj); i++) { 
+        if (i > 0) { 
+            /* Write ", " */ 
+            if (_PyUnicodeWriter_WriteASCIIString(&writer, ", ", 2) < 0) { 
+                goto error; 
+            } 
+        } 
+
+        /* Write "name=repr" */ 
+        const char *name_utf8 = typ->tp_members[i].name; 
+        if (name_utf8 == NULL) { 
+            PyErr_Format(PyExc_SystemError, "In structseq_repr(), member %zd name is NULL" 
                          " for type %.500s", i, typ->tp_name);
-            goto error;
+            goto error; 
         }
-
-        PyObject *name = PyUnicode_DecodeUTF8(name_utf8, strlen(name_utf8), NULL);
-        if (name == NULL) {
-            goto error;
+ 
+        PyObject *name = PyUnicode_DecodeUTF8(name_utf8, strlen(name_utf8), NULL); 
+        if (name == NULL) { 
+            goto error; 
         }
-        if (_PyUnicodeWriter_WriteStr(&writer, name) < 0) {
-            Py_DECREF(name);
-            goto error;
+        if (_PyUnicodeWriter_WriteStr(&writer, name) < 0) { 
+            Py_DECREF(name); 
+            goto error; 
+        } 
+        Py_DECREF(name); 
+
+        if (_PyUnicodeWriter_WriteChar(&writer, '=') < 0) { 
+            goto error; 
         }
-        Py_DECREF(name);
-
-        if (_PyUnicodeWriter_WriteChar(&writer, '=') < 0) {
-            goto error;
-        }
-
-        PyObject *value = PyStructSequence_GET_ITEM(obj, i);
-        assert(value != NULL);
-        PyObject *repr = PyObject_Repr(value);
-        if (repr == NULL) {
-            goto error;
-        }
-        if (_PyUnicodeWriter_WriteStr(&writer, repr) < 0) {
+ 
+        PyObject *value = PyStructSequence_GET_ITEM(obj, i); 
+        assert(value != NULL); 
+        PyObject *repr = PyObject_Repr(value); 
+        if (repr == NULL) { 
+            goto error; 
+        } 
+        if (_PyUnicodeWriter_WriteStr(&writer, repr) < 0) { 
             Py_DECREF(repr);
-            goto error;
+            goto error; 
         }
-        Py_DECREF(repr);
+        Py_DECREF(repr); 
     }
-
-    if (_PyUnicodeWriter_WriteChar(&writer, ')') < 0) {
-        goto error;
+ 
+    if (_PyUnicodeWriter_WriteChar(&writer, ')') < 0) { 
+        goto error; 
     }
 
-    return _PyUnicodeWriter_Finish(&writer);
-
-error:
-    _PyUnicodeWriter_Dealloc(&writer);
-    return NULL;
+    return _PyUnicodeWriter_Finish(&writer); 
+ 
+error: 
+    _PyUnicodeWriter_Dealloc(&writer); 
+    return NULL; 
 }
 
-
+ 
 static PyObject *
-structseq_reduce(PyStructSequence* self, PyObject *Py_UNUSED(ignored))
+structseq_reduce(PyStructSequence* self, PyObject *Py_UNUSED(ignored)) 
 {
     PyObject* tup = NULL;
     PyObject* dict = NULL;
@@ -290,7 +290,7 @@ structseq_reduce(PyStructSequence* self, PyObject *Py_UNUSED(ignored))
     n_fields = REAL_SIZE(self);
     n_visible_fields = VISIBLE_SIZE(self);
     n_unnamed_fields = UNNAMED_FIELDS(self);
-    tup = _PyTuple_FromArray(self->ob_item, n_visible_fields);
+    tup = _PyTuple_FromArray(self->ob_item, n_visible_fields); 
     if (!tup)
         goto error;
 
@@ -298,7 +298,7 @@ structseq_reduce(PyStructSequence* self, PyObject *Py_UNUSED(ignored))
     if (!dict)
         goto error;
 
-    for (i = n_visible_fields; i < n_fields; i++) {
+    for (i = n_visible_fields; i < n_fields; i++) { 
         const char *n = Py_TYPE(self)->tp_members[i-n_unnamed_fields].name;
         if (PyDict_SetItemString(dict, n, self->ob_item[i]) < 0)
             goto error;
@@ -322,119 +322,119 @@ static PyMethodDef structseq_methods[] = {
     {NULL, NULL}
 };
 
-static Py_ssize_t
-count_members(PyStructSequence_Desc *desc, Py_ssize_t *n_unnamed_members) {
-    Py_ssize_t i;
-
-    *n_unnamed_members = 0;
-    for (i = 0; desc->fields[i].name != NULL; ++i) {
-        if (desc->fields[i].name == PyStructSequence_UnnamedField) {
-            (*n_unnamed_members)++;
-        }
-    }
-    return i;
-}
-
-static int
-initialize_structseq_dict(PyStructSequence_Desc *desc, PyObject* dict,
-                          Py_ssize_t n_members, Py_ssize_t n_unnamed_members) {
-    PyObject *v;
-
-#define SET_DICT_FROM_SIZE(key, value)                                         \
-    do {                                                                       \
-        v = PyLong_FromSsize_t(value);                                         \
-        if (v == NULL) {                                                       \
-            return -1;                                                         \
-        }                                                                      \
-        if (PyDict_SetItemString(dict, key, v) < 0) {                          \
-            Py_DECREF(v);                                                      \
-            return -1;                                                         \
-        }                                                                      \
-        Py_DECREF(v);                                                          \
-    } while (0)
-
-    SET_DICT_FROM_SIZE(visible_length_key, desc->n_in_sequence);
-    SET_DICT_FROM_SIZE(real_length_key, n_members);
-    SET_DICT_FROM_SIZE(unnamed_fields_key, n_unnamed_members);
-    return 0;
-}
-
-static void
-initialize_members(PyStructSequence_Desc *desc, PyMemberDef* members,
-                   Py_ssize_t n_members) {
-    Py_ssize_t i, k;
-
-    for (i = k = 0; i < n_members; ++i) {
-        if (desc->fields[i].name == PyStructSequence_UnnamedField) {
-            continue;
-        }
-
-        /* The names and docstrings in these MemberDefs are statically */
-        /* allocated so it is expected that they'll outlive the MemberDef */
-        members[k].name = desc->fields[i].name;
-        members[k].type = T_OBJECT;
-        members[k].offset = offsetof(PyStructSequence, ob_item)
-          + i * sizeof(PyObject*);
-        members[k].flags = READONLY;
-        members[k].doc = desc->fields[i].doc;
-        k++;
-    }
-    members[k].name = NULL;
-}
-
+static Py_ssize_t 
+count_members(PyStructSequence_Desc *desc, Py_ssize_t *n_unnamed_members) { 
+    Py_ssize_t i; 
+
+    *n_unnamed_members = 0; 
+    for (i = 0; desc->fields[i].name != NULL; ++i) { 
+        if (desc->fields[i].name == PyStructSequence_UnnamedField) { 
+            (*n_unnamed_members)++; 
+        } 
+    } 
+    return i; 
+} 
+ 
+static int 
+initialize_structseq_dict(PyStructSequence_Desc *desc, PyObject* dict, 
+                          Py_ssize_t n_members, Py_ssize_t n_unnamed_members) { 
+    PyObject *v; 
+ 
+#define SET_DICT_FROM_SIZE(key, value)                                         \ 
+    do {                                                                       \ 
+        v = PyLong_FromSsize_t(value);                                         \ 
+        if (v == NULL) {                                                       \ 
+            return -1;                                                         \ 
+        }                                                                      \ 
+        if (PyDict_SetItemString(dict, key, v) < 0) {                          \ 
+            Py_DECREF(v);                                                      \ 
+            return -1;                                                         \ 
+        }                                                                      \ 
+        Py_DECREF(v);                                                          \ 
+    } while (0) 
+ 
+    SET_DICT_FROM_SIZE(visible_length_key, desc->n_in_sequence); 
+    SET_DICT_FROM_SIZE(real_length_key, n_members); 
+    SET_DICT_FROM_SIZE(unnamed_fields_key, n_unnamed_members); 
+    return 0; 
+} 
+ 
+static void 
+initialize_members(PyStructSequence_Desc *desc, PyMemberDef* members, 
+                   Py_ssize_t n_members) { 
+    Py_ssize_t i, k; 
+ 
+    for (i = k = 0; i < n_members; ++i) { 
+        if (desc->fields[i].name == PyStructSequence_UnnamedField) { 
+            continue; 
+        } 
+ 
+        /* The names and docstrings in these MemberDefs are statically */ 
+        /* allocated so it is expected that they'll outlive the MemberDef */ 
+        members[k].name = desc->fields[i].name; 
+        members[k].type = T_OBJECT; 
+        members[k].offset = offsetof(PyStructSequence, ob_item) 
+          + i * sizeof(PyObject*); 
+        members[k].flags = READONLY; 
+        members[k].doc = desc->fields[i].doc; 
+        k++; 
+    } 
+    members[k].name = NULL; 
+} 
+ 
 int
 PyStructSequence_InitType2(PyTypeObject *type, PyStructSequence_Desc *desc)
 {
-    PyMemberDef *members;
-    Py_ssize_t n_members, n_unnamed_members;
+    PyMemberDef *members; 
+    Py_ssize_t n_members, n_unnamed_members; 
 
 #ifdef Py_TRACE_REFS
     /* if the type object was chained, unchain it first
        before overwriting its storage */
     if (type->ob_base.ob_base._ob_next) {
-        _Py_ForgetReference((PyObject *)type);
+        _Py_ForgetReference((PyObject *)type); 
     }
 #endif
 
-    /* PyTypeObject has already been initialized */
-    if (Py_REFCNT(type) != 0) {
-        PyErr_BadInternalCall();
-        return -1;
-    }
+    /* PyTypeObject has already been initialized */ 
+    if (Py_REFCNT(type) != 0) { 
+        PyErr_BadInternalCall(); 
+        return -1; 
+    } 
 
     type->tp_name = desc->name;
-    type->tp_basicsize = sizeof(PyStructSequence) - sizeof(PyObject *);
-    type->tp_itemsize = sizeof(PyObject *);
-    type->tp_dealloc = (destructor)structseq_dealloc;
-    type->tp_repr = (reprfunc)structseq_repr;
+    type->tp_basicsize = sizeof(PyStructSequence) - sizeof(PyObject *); 
+    type->tp_itemsize = sizeof(PyObject *); 
+    type->tp_dealloc = (destructor)structseq_dealloc; 
+    type->tp_repr = (reprfunc)structseq_repr; 
     type->tp_doc = desc->doc;
-    type->tp_base = &PyTuple_Type;
-    type->tp_methods = structseq_methods;
-    type->tp_new = structseq_new;
-    type->tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC;
-    type->tp_traverse = (traverseproc) structseq_traverse;
-
-    n_members = count_members(desc, &n_unnamed_members);
-    members = PyMem_NEW(PyMemberDef, n_members - n_unnamed_members + 1);
+    type->tp_base = &PyTuple_Type; 
+    type->tp_methods = structseq_methods; 
+    type->tp_new = structseq_new; 
+    type->tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC; 
+    type->tp_traverse = (traverseproc) structseq_traverse; 
+
+    n_members = count_members(desc, &n_unnamed_members); 
+    members = PyMem_NEW(PyMemberDef, n_members - n_unnamed_members + 1); 
     if (members == NULL) {
         PyErr_NoMemory();
         return -1;
     }
-    initialize_members(desc, members, n_members);
+    initialize_members(desc, members, n_members); 
     type->tp_members = members;
 
-    if (PyType_Ready(type) < 0) {
-        PyMem_FREE(members);
+    if (PyType_Ready(type) < 0) { 
+        PyMem_FREE(members); 
         return -1;
-    }
+    } 
     Py_INCREF(type);
 
-    if (initialize_structseq_dict(
-            desc, type->tp_dict, n_members, n_unnamed_members) < 0) {
-        PyMem_FREE(members);
-        Py_DECREF(type);
-        return -1;
-    }
+    if (initialize_structseq_dict( 
+            desc, type->tp_dict, n_members, n_unnamed_members) < 0) { 
+        PyMem_FREE(members); 
+        Py_DECREF(type); 
+        return -1; 
+    } 
 
     return 0;
 }
@@ -445,68 +445,68 @@ PyStructSequence_InitType(PyTypeObject *type, PyStructSequence_Desc *desc)
     (void)PyStructSequence_InitType2(type, desc);
 }
 
-PyTypeObject *
+PyTypeObject * 
 PyStructSequence_NewType(PyStructSequence_Desc *desc)
 {
-    PyMemberDef *members;
-    PyObject *bases;
-    PyTypeObject *type;
-    PyType_Slot slots[8];
-    PyType_Spec spec;
-    Py_ssize_t n_members, n_unnamed_members;
-
-    /* Initialize MemberDefs */
-    n_members = count_members(desc, &n_unnamed_members);
-    members = PyMem_NEW(PyMemberDef, n_members - n_unnamed_members + 1);
-    if (members == NULL) {
-        PyErr_NoMemory();
+    PyMemberDef *members; 
+    PyObject *bases; 
+    PyTypeObject *type; 
+    PyType_Slot slots[8]; 
+    PyType_Spec spec; 
+    Py_ssize_t n_members, n_unnamed_members; 
+
+    /* Initialize MemberDefs */ 
+    n_members = count_members(desc, &n_unnamed_members); 
+    members = PyMem_NEW(PyMemberDef, n_members - n_unnamed_members + 1); 
+    if (members == NULL) { 
+        PyErr_NoMemory(); 
         return NULL;
-    }
-    initialize_members(desc, members, n_members);
-
-    /* Initialize Slots */
-    slots[0] = (PyType_Slot){Py_tp_dealloc, (destructor)structseq_dealloc};
-    slots[1] = (PyType_Slot){Py_tp_repr, (reprfunc)structseq_repr};
-    slots[2] = (PyType_Slot){Py_tp_methods, structseq_methods};
-    slots[3] = (PyType_Slot){Py_tp_new, structseq_new};
-    slots[4] = (PyType_Slot){Py_tp_members, members};
-    slots[5] = (PyType_Slot){Py_tp_traverse, (traverseproc)structseq_traverse};
-    if (desc->doc) {
-        slots[6] = (PyType_Slot){Py_tp_doc, (void *)desc->doc};
-        slots[7] = (PyType_Slot){0, 0};
-    }
-    else {
-        slots[6] = (PyType_Slot){0, 0};
-    }
-
-    /* Initialize Spec */
-    /* The name in this PyType_Spec is statically allocated so it is */
-    /* expected that it'll outlive the PyType_Spec */
-    spec.name = desc->name;
-    spec.basicsize = sizeof(PyStructSequence) - sizeof(PyObject *);
-    spec.itemsize = sizeof(PyObject *);
-    spec.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC;
-    spec.slots = slots;
-
-    bases = PyTuple_Pack(1, &PyTuple_Type);
-    if (bases == NULL) {
-        PyMem_FREE(members);
-        return NULL;
-    }
-    type = (PyTypeObject *)PyType_FromSpecWithBases(&spec, bases);
-    Py_DECREF(bases);
-    PyMem_FREE(members);
-    if (type == NULL) {
+    } 
+    initialize_members(desc, members, n_members); 
+ 
+    /* Initialize Slots */ 
+    slots[0] = (PyType_Slot){Py_tp_dealloc, (destructor)structseq_dealloc}; 
+    slots[1] = (PyType_Slot){Py_tp_repr, (reprfunc)structseq_repr}; 
+    slots[2] = (PyType_Slot){Py_tp_methods, structseq_methods}; 
+    slots[3] = (PyType_Slot){Py_tp_new, structseq_new}; 
+    slots[4] = (PyType_Slot){Py_tp_members, members}; 
+    slots[5] = (PyType_Slot){Py_tp_traverse, (traverseproc)structseq_traverse}; 
+    if (desc->doc) { 
+        slots[6] = (PyType_Slot){Py_tp_doc, (void *)desc->doc}; 
+        slots[7] = (PyType_Slot){0, 0}; 
+    } 
+    else { 
+        slots[6] = (PyType_Slot){0, 0}; 
+    } 
+ 
+    /* Initialize Spec */ 
+    /* The name in this PyType_Spec is statically allocated so it is */ 
+    /* expected that it'll outlive the PyType_Spec */ 
+    spec.name = desc->name; 
+    spec.basicsize = sizeof(PyStructSequence) - sizeof(PyObject *); 
+    spec.itemsize = sizeof(PyObject *); 
+    spec.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC; 
+    spec.slots = slots; 
+ 
+    bases = PyTuple_Pack(1, &PyTuple_Type); 
+    if (bases == NULL) { 
+        PyMem_FREE(members); 
         return NULL;
     }
-
-    if (initialize_structseq_dict(
-            desc, type->tp_dict, n_members, n_unnamed_members) < 0) {
-        Py_DECREF(type);
-        return NULL;
-    }
-
-    return type;
+    type = (PyTypeObject *)PyType_FromSpecWithBases(&spec, bases); 
+    Py_DECREF(bases); 
+    PyMem_FREE(members); 
+    if (type == NULL) { 
+        return NULL; 
+    } 
+ 
+    if (initialize_structseq_dict( 
+            desc, type->tp_dict, n_members, n_unnamed_members) < 0) { 
+        Py_DECREF(type); 
+        return NULL; 
+    } 
+ 
+    return type; 
 }
 
 int _PyStructSequence_Init(void)