keep dialyzer happybug20597

- the spec for rabbit_misc:format_stderr/2 was wrong,
- for rabbit_{control,multi}:start/0 we need to add a spec so we can
  specify the no_return() caused by the calls to halt()

3 files changed, 25 insertions, 1 deletions

diff --git a/src/rabbit_control.erl b/src/rabbit_control.erl
index cbc11b40..352d7e75 100644
--- a/src/rabbit_control.erl
+++ b/src/rabbit_control.erl
@@ -38,6 +38,19 @@
 
 -define(RPC_TIMEOUT, 30000).
 
+%%----------------------------------------------------------------------------
+
+-ifdef(use_specs).
+
+-spec(start/0 :: () -> no_return()).
+-spec(stop/0 :: () -> 'ok').
+-spec(action/4 :: (atom(), erlang_node(), [string()],
+                   fun ((string(), [any()]) -> 'ok')) -> 'ok').
+
+-endif.
+
+%%----------------------------------------------------------------------------
+
 start() ->
     FullCommand = init:get_plain_arguments(),
     #params{quiet = Quiet, node = Node, command = Command, args = Args} = 
diff --git a/src/rabbit_misc.erl b/src/rabbit_misc.erl
index b15ad68e..1fcd9a61 100644
--- a/src/rabbit_misc.erl
+++ b/src/rabbit_misc.erl
@@ -105,7 +105,7 @@
 -spec(dirty_dump_log/1 :: (string()) -> 'ok' | {'error', any()}).
 -spec(append_file/2 :: (string(), string()) -> 'ok' | {'error', any()}).
 -spec(ensure_parent_dirs_exist/1 :: (string()) -> 'ok').
--spec(format_stderr/2 :: (string(), [any()]) -> 'true').
+-spec(format_stderr/2 :: (string(), [any()]) -> 'ok').
 
 -endif.
 
diff --git a/src/rabbit_multi.erl b/src/rabbit_multi.erl
index 5e8edd53..d9197535 100644
--- a/src/rabbit_multi.erl
+++ b/src/rabbit_multi.erl
@@ -36,6 +36,17 @@
 
 -define(RPC_SLEEP, 500).
 
+%%----------------------------------------------------------------------------
+
+-ifdef(use_specs).
+
+-spec(start/0 :: () -> no_return()).
+-spec(stop/0 :: () -> 'ok').
+
+-endif.
+
+%%----------------------------------------------------------------------------
+
 start() ->
     RpcTimeout =
         case init:get_argument(maxwait) of