commit 665c7746fca180266b121183c2d5136c547006e0
author Victor Stinner <vstinner@python.org> Fri Apr 30 18:40:30 2021 +0200
committer GitHub <noreply@github.com> Fri Apr 30 18:40:30 2021 +0200
tree 208fbd2a6ac0b7bf001fd3fb09ac36884f967215
parent e374a40afa09be728b01653a06c9febfad9c9c50

bpo-43916: _md5.md5 uses Py_TPFLAGS_DISALLOW_INSTANTIATION (GH-25753)

The following types use Py_TPFLAGS_DISALLOW_INSTANTIATION flag:

* _md5.md5
* _sha1.sha1
* _sha256.sha224
* _sha256.sha256
* _sha512.sha384
* _sha512.sha512

Modules/sha256module.c

diff --git a/Modules/sha256module.c b/Modules/sha256module.c
index b90e5df..ccb1862 100644
--- a/Modules/sha256module.c
+++ b/Modules/sha256module.c
@@ -544,14 +544,14 @@ static PyType_Slot sha256_types_slots[] = {
 static PyType_Spec sha224_type_spec = {
     .name = "_sha256.sha224",
     .basicsize = sizeof(SHAobject),
-    .flags = Py_TPFLAGS_DEFAULT,
+    .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION,
     .slots = sha256_types_slots
 };
 
 static PyType_Spec sha256_type_spec = {
     .name = "_sha256.sha256",
     .basicsize = sizeof(SHAobject),
-    .flags = Py_TPFLAGS_DEFAULT,
+    .flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION,
     .slots = sha256_types_slots
 };