Freeze register new messages

Author: cdce8p

pylint/lint/parallel.py

@@ -7,7 +7,6 @@
 import functools
 from collections import defaultdict
 from collections.abc import Iterable, Sequence
-from copy import copy
 from typing import TYPE_CHECKING, Any
 
 import dill
@@ -55,19 +54,14 @@ def _worker_initialize(
 
     # Re-register dynamic plugins, since the pool does not have access to the
     # astroid module that existed when the linter was pickled.
-    # Save and restore enabled and disabled messages since those might get overwritten
-    # during the dynamic plugin load.
-    enable = copy(_worker_linter.config.enable)
-    disable = copy(_worker_linter.config.disable)
+    # Freeze register new messages to prevent overwriting enabled and disabled messaged
+    # during dynamic plugin re-load.
+    _worker_linter._freeze_register_msgs = True
     _worker_linter._deregister_checkers(
         _worker_linter._registered_dynamic_plugin_checkers
     )
     _worker_linter.load_plugin_modules(_worker_linter._dynamic_plugins, force=True)
     _worker_linter.load_plugin_configuration()
-    for msg in enable:
-        _worker_linter.linter.enable(msg)
-    for msg in disable:
-        _worker_linter.linter.disable(msg)
 
     if extra_packages_paths:
         _augment_sys_path(extra_packages_paths)

pylint/lint/pylinter.py

@@ -364,6 +364,7 @@ def __init__(
         self.msgs_store = MessageDefinitionStore(self.config.py_version)
         self.msg_status = 0
         self._by_id_managed_msgs: list[ManagedMessage] = []
+        self._freeze_register_msgs = False
 
         # Attributes related to visiting files
         self.file_state = FileState("", self.msgs_store, is_base_filestate=True)
@@ -506,13 +507,13 @@ def register_checker(self, checker: checkers.BaseChecker) -> None:
         self._registered_checkers.add((checker.name, checker))
         for r_id, r_title, r_cb in checker.reports:
             self.register_report(r_id, r_title, r_cb, checker)
-        if hasattr(checker, "msgs"):
+        if not self._freeze_register_msgs and hasattr(checker, "msgs"):
             self.msgs_store.register_messages_from_checker(checker)
             for message in checker.messages:
                 if not message.default_enabled:
                     self.disable(message.msgid)
         # Register the checker, but disable all of its messages.
-        if not getattr(checker, "enabled", True):
+        if not (self._freeze_register_msgs or getattr(checker, "enabled", True)):
             self.disable(checker.name)
 
     def _deregister_checkers(