Merge branch 'sv/format_status_error_info' into dev

* sv/format_status_error_info:
  Add support for the format_status callback to gen_event
  Extend format_status for gen_server/gen_fsm termination error logging

OTP-8630 sv/format_status_error_info

When a gen_server, gen_fsm process, or gen_event terminates abnormally,
sometimes the text representation of the process state can occupy many
lines of the error log, depending on the definition of the state term. A
mechanism to trim out parts of the state from the log has been added (using
a format_status/2 callback). See the documentation.

1 files changed, 8 insertions, 7 deletions

diff --git a/lib/stdlib/test/dummy1_h.erl b/lib/stdlib/test/dummy1_h.erl
index 4377d774a3..5b503d5984 100644
--- a/lib/stdlib/test/dummy1_h.erl
+++ b/lib/stdlib/test/dummy1_h.erl
@@ -1,19 +1,19 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1996-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 1996-2010. All Rights Reserved.
+%%
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
 %% compliance with the License. You should have received a copy of the
 %% Erlang Public License along with this software. If not, it can be
 %% retrieved online at http://www.erlang.org/.
-%% 
+%%
 %% Software distributed under the License is distributed on an "AS IS"
 %% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 %% the License for the specific language governing rights and limitations
 %% under the License.
-%% 
+%%
 %% %CopyrightEnd%
 %%
 -module(dummy1_h).
@@ -21,7 +21,7 @@
 %% Test event handler for gen_event_SUITE.erl
 
 -export([init/1, handle_event/2, handle_call/2, handle_info/2,
-	 terminate/2]).
+	 terminate/2, format_status/2]).
 
 init(make_error) ->
     {error, my_error};
@@ -67,4 +67,5 @@ terminate(remove_handler, Parent) ->
 terminate(_Reason, _State) ->
     ok.
 
-
+format_status(_Opt, [_PDict, _State]) ->
+    "dummy1_h handler state".