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-rw-r--r--lib/kernel/src/gen_udp.erl5
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/kernel/src/gen_udp.erl b/lib/kernel/src/gen_udp.erl
index 8688799ae9..914854c65c 100644
--- a/lib/kernel/src/gen_udp.erl
+++ b/lib/kernel/src/gen_udp.erl
@@ -185,9 +185,10 @@ connect(S, Address, Port) when is_port(S) ->
Error
end.
--spec controlling_process(Socket, Pid) -> ok when
+-spec controlling_process(Socket, Pid) -> ok | {error, Reason} when
Socket :: socket(),
- Pid :: pid().
+ Pid :: pid(),
+ Reason :: closed | not_owner | inet:posix().
controlling_process(S, NewOwner) ->
inet:udp_controlling_process(S, NewOwner).