Fix dataclasses in subinterpreters

Fixes https://bugzilla.redhat.com/2252567

The added commit was merged to the 3.12 branch upstream.

python3.12.spec

@@ -17,7 +17,7 @@ URL: https://www.python.org/
 #global prerel ...
 %global upstream_version %{general_version}%{?prerel}
 Version: %{general_version}%{?prerel:~%{prerel}}
-Release: 2%{?dist}
+Release: 3%{?dist}
 License: Python-2.0.1
 
 
@@ -364,6 +364,27 @@ Patch251: 00251-change-user-install-location.patch
 # https://github.com/GrahamDumpleton/mod_wsgi/issues/730
 Patch371: 00371-revert-bpo-1596321-fix-threading-_shutdown-for-the-main-thread-gh-28549-gh-28589.patch
 
+# 00411 # b39f80246f9ad02d636c081929b7fffcd2de2f34
+# gh-106931: Intern Statically Allocated Strings Globally
+#
+# We tried this before with a dict and for all interned strings.
+# That ran into problems due to interpreter isolation.
+# However, exclusively using a per-interpreter cache caused some inconsistency
+# that can eliminate the benefit of interning.
+# Here we circle back to using a global cache,
+# but only for statically allocated strings.
+# We also use a more-basic _Py_hashtable_t for that global cache instead of a dict.
+#
+# Ideally we would only have the global cache, but the optional isolation
+# of each interpreter's allocator means that a non-static string object
+# must not outlive its interpreter.
+# Thus we would have to store a copy of each such interned string
+# in the global cache, tied to the main interpreter.
+#
+# (cherry-picked from commit b72947a8d26915156323ccfd04d273199ecb870c)
+# (cherry-picked from commit 3e6b32875207c39325ed8eded5819cfa5dcebc82)
+Patch411: 00411-gh-106931-intern-statically-allocated-strings-globally.patch
+
 # (New patches go here ^^^)
 #
 # When adding new patches to "python" and "python3" in Fedora, EL, etc.,
@@ -1666,6 +1687,10 @@ CheckPython optimized
 # ======================================================
 
 %changelog
+* Tue Dec 05 2023 Miro Hrončok <mhroncok@redhat.com> - 3.12.0-3
+- Fix dataclasses in subinterpreters
+- Fixes: rhzb#2252567
+
 * Thu Oct 05 2023 Yaakov Selkowitz <yselkowi@redhat.com> - 3.12.0-2
 - Use bundled libb2 in RHEL builds