From 884a0706e351caf2b9c905e7dea4e1528efc0a12 Mon Sep 17 00:00:00 2001
From: Siri Hansen <siri@erlang.org>
Date: Wed, 13 Feb 2019 16:02:16 +0100
Subject: [logger] Keep track of inode for logger_std_h log file

If the inode changes, the file is now reopened. This may happen, for
instance, if the log file is opened and saved by an editor.
---
 lib/kernel/test/logger_std_h_SUITE.erl | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

(limited to 'lib/kernel/test')

diff --git a/lib/kernel/test/logger_std_h_SUITE.erl b/lib/kernel/test/logger_std_h_SUITE.erl
index 484d914ec3..b2c2c8ba67 100644
--- a/lib/kernel/test/logger_std_h_SUITE.erl
+++ b/lib/kernel/test/logger_std_h_SUITE.erl
@@ -141,7 +141,8 @@ all() ->
      mem_kill_std,
      restart_after,
      handler_requests_under_load,
-     recreate_deleted_log
+     recreate_deleted_log,
+     reopen_changed_log
     ].
 
 add_remove_instance_tty(_Config) ->
@@ -1269,6 +1270,21 @@ recreate_deleted_log(Config) ->
 recreate_deleted_log(cleanup, _Config) ->
     ok = stop_handler(?MODULE).
 
+reopen_changed_log(Config) ->
+    {Log,_HConfig,_StdHConfig} =
+        start_handler(?MODULE, ?FUNCTION_NAME, Config),
+    logger:notice("first",?domain),
+    logger_std_h:filesync(?MODULE),
+    ok = file:rename(Log,Log++".old"),
+    ok = file:write_file(Log,""),
+    logger:notice("second",?domain),
+    logger_std_h:filesync(?MODULE),
+    {ok,<<"first\n">>} = file:read_file(Log++".old"),
+    {ok,<<"second\n">>} = file:read_file(Log),
+    ok.
+reopen_changed_log(cleanup, _Config) ->
+    ok = stop_handler(?MODULE).
+
 %%%-----------------------------------------------------------------
 %%%
 send_requests(TO, Reqs = [{Mod,Func,Args,Res}|Rs]) ->
-- 
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