apply victor's comment

Author: shihai1991

Doc/whatsnew/3.10.rst

@@ -366,7 +366,8 @@ New Features
 * Added :c:func:`PyUnicode_AsUTF8AndSize` to the limited C API.
   (Contributed by Alex Gaynor in :issue:`41784`.)
 
-* The :c:func:`PyType_FromModuleAndSpec` function can accept tp_doc=NULL.
+* The :c:func:`PyType_FromModuleAndSpec` function now accepts NULL ``tp_doc``
+  slot.
   (Contributed by Hai Shi in :issue:`41832`.)
 
 

Modules/_lsprof.c

@@ -489,14 +489,12 @@ static PyStructSequence_Field profiler_subentry_fields[] = {
 
 static PyStructSequence_Desc profiler_entry_desc = {
     .name = "_lsprof.profiler_entry",
-    .doc = "",
     .fields = profiler_entry_fields,
     .n_in_sequence = 6
 };
 
 static PyStructSequence_Desc profiler_subentry_desc = {
     .name = "_lsprof.profiler_subentry",
-    .doc = "",
     .fields = profiler_subentry_fields,
     .n_in_sequence = 5
 };

Modules/_testcapimodule.c

@@ -3987,10 +3987,20 @@ test_structseq_newtype_doesnt_leak(PyObject *Py_UNUSED(self),
     assert(PyType_FastSubclass(structseq_type, Py_TPFLAGS_TUPLE_SUBCLASS));
     Py_DECREF(structseq_type);
 
-    descr.doc = NULL;
-    structseq_type = PyStructSequence_NewType(&descr);
-    assert(structseq_type != NULL);
-    Py_DECREF(structseq_type);
+    Py_RETURN_NONE;
+}
+
+static PyType_Spec HeapDocCType_spec;
+
+static PyObject *
+test_PyType_FromSpec(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(args))
+{
+    void *tp_doc = HeapDocCType_spec.slots[0].pfunc;
+    HeapDocCType_spec.slots[0].pfunc = NULL;
+    PyObject *HeapDocCType = PyType_FromSpec(&HeapDocCType_spec);
+    assert(HeapDocCType != NULL);
+    HeapDocCType_spec.slots[0].pfunc = tp_doc;
+    Py_DECREF(HeapDocCType);
 
     Py_RETURN_NONE;
 }
@@ -5606,6 +5616,7 @@ static PyMethodDef TestMethods[] = {
     {"test_decref_doesnt_leak", test_decref_doesnt_leak,         METH_NOARGS},
     {"test_structseq_newtype_doesnt_leak",
         test_structseq_newtype_doesnt_leak, METH_NOARGS},
+    {"test_PyType_FromSpec", test_PyType_FromSpec, METH_NOARGS},
     {"test_incref_decref_API",  test_incref_decref_API,          METH_NOARGS},
     {"test_long_and_overflow",  test_long_and_overflow,          METH_NOARGS},
     {"test_long_as_double",     test_long_as_double,             METH_NOARGS},