Jun 11, 2023 · Jun 11, 2023 · Jun 11, 2023
diff --git a/mypy/checker.py b/mypy/checker.py
                            isinstance(return_type, Instance)
                            and return_type.type.fullname == "builtins.object"
                        )
                        and not is_lambda
                    ):
                        self.msg.incorrectly_returning_any(return_type, s)
                    return
diff --git a/test-data/unit/check-flags.test b/test-data/unit/check-flags.test
 follow_imports = skip
 follow_imports_for_stubs = true
 [builtins fixtures/dict.pyi]

 [case testReturnAnyLambda]
 # flags: --warn-return-any
 from typing import Any, Callable

 def cb(f: Callable[[int], int]) -> None: ...
 a: Any
 cb(lambda x: a)  # OK

 fn = lambda x: a
 cb(fn)
Original file line number	Diff line number	Diff line change
Expand Up		@@ -4270,6 +4270,7 @@ def check_return_stmt(self, s: ReturnStmt) -> None:
		isinstance(return_type, Instance)
		and return_type.type.fullname == "builtins.object"
		)
		and not is_lambda
		):
		self.msg.incorrectly_returning_any(return_type, s)
		return
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -2184,3 +2184,14 @@ def f(x: bytes, y: bytearray, z: memoryview) -> None:
		follow_imports = skip
		follow_imports_for_stubs = true
		[builtins fixtures/dict.pyi]

		[case testReturnAnyLambda]
		# flags: --warn-return-any
		from typing import Any, Callable

		def cb(f: Callable[[int], int]) -> None: ...
		a: Any
		cb(lambda x: a) # OK

		fn = lambda x: a
		cb(fn)