From 4b97ff92a8d2d429370da40c9845199c2a68f12d Mon Sep 17 00:00:00 2001
From: Boshan Sun <boshan@subsplash.com>
Date: Thu, 22 Mar 2018 19:47:04 -0700
Subject: Fix sys's debug statistics.

Currently, in sys:stat/2, the message out only count for system events with format
{out, Msg, To}. However, the gen_server:reply/5 will call sys:handle_debug/4
with format {out, Reply, To, State}. That will make the message out count fail
to pattern matching.

Also update sys_SUITE.erl and relevant docs.
---
 lib/stdlib/test/sys_SUITE.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/stdlib/test')

diff --git a/lib/stdlib/test/sys_SUITE.erl b/lib/stdlib/test/sys_SUITE.erl
index b44df0fbda..a28eca513f 100644
--- a/lib/stdlib/test/sys_SUITE.erl
+++ b/lib/stdlib/test/sys_SUITE.erl
@@ -84,7 +84,7 @@ stats(Config) when is_list(Config) ->
     {ok,-44} = public_call(44),
     {ok,Stats} = sys:statistics(?server,get),
     true = lists:member({messages_in,1}, Stats),
-    true = lists:member({messages_out,0}, Stats),
+    true = lists:member({messages_out,1}, Stats),
     ok = sys:statistics(?server,false),
     {status,_Pid,{module,_Mod},[_PDict,running,Self,_,_]} =
 	sys:get_status(?server),
-- 
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