bpo-43764: Fix `__match_args__` generation logic for dataclasses (GH-25284)
diff --git a/Lib/dataclasses.py b/Lib/dataclasses.py
index afc4b82..ceda822 100644
--- a/Lib/dataclasses.py
+++ b/Lib/dataclasses.py
@@ -1017,7 +1017,7 @@ def _process_class(cls, init, repr, eq, order, unsafe_hash, frozen):
str(inspect.signature(cls)).replace(' -> NoneType', ''))
if '__match_args__' not in cls.__dict__:
- cls.__match_args__ = tuple(f.name for f in flds if f.init)
+ cls.__match_args__ = tuple(f.name for f in field_list if f.init)
abc.update_abstractmethods(cls)