Log error on unhandled GenServer message by defaultjf-handle_info

1 files changed, 8 insertions, 1 deletions

diff --git a/lib/elixir/lib/gen_server.ex b/lib/elixir/lib/gen_server.ex
index 92cd74f11..fa1daac8c 100644
--- a/lib/elixir/lib/gen_server.ex
+++ b/lib/elixir/lib/gen_server.ex
@@ -550,7 +550,14 @@ defmodule GenServer do
       end
 
       @doc false
-      def handle_info(_msg, state) do
+      def handle_info(msg, state) do
+        proc =
+          case Process.info(self(), :registered_name) do
+            {_, []}   -> self()
+            {_, name} -> name
+          end
+        :error_logger.error_msg('~p ~p received unhandled message: ~p~n',
+                                [__MODULE__, proc, msg])
         {:noreply, state}
       end