From 7aec6ad7e56a377bf84fe833dfde43f52263224a Mon Sep 17 00:00:00 2001
From: Anders Svensson <anders@erlang.org>
Date: Sat, 22 Apr 2017 23:57:48 +0200
Subject: Use avp_arity/1 when creating a zero group

Converting with list_to_binary/1 appears to be faster than the
equivalent binary comprehension:

  << (z(F,A)) || {F,A} <- avp_arity(Name) >>
---
 lib/diameter/include/diameter_gen.hrl | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

(limited to 'lib/diameter/include')

diff --git a/lib/diameter/include/diameter_gen.hrl b/lib/diameter/include/diameter_gen.hrl
index 3c59370e73..f788264647 100644
--- a/lib/diameter/include/diameter_gen.hrl
+++ b/lib/diameter/include/diameter_gen.hrl
@@ -733,10 +733,7 @@ grouped_decode(Name, ComponentAvps) ->
 %% ---------------------------------------------------------------------------
 
 empty_group(Name) ->
-    list_to_binary(empty_body(Name)).
-
-empty_body(Name) ->
-    [z(F, avp_arity(Name, F)) || F <- '#info-'(name2rec(Name), fields)].
+    list_to_binary([z(F,A) || {F,A} <- avp_arity(Name)]).
 
 z(Name, 1) ->
     z(Name);
-- 
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