From bb8bf19e9c4ffff295d69935e6eee606e791df50 Mon Sep 17 00:00:00 2001
From: Emile Joubert <emile@rabbitmq.com>
Date: Fri, 24 Aug 2012 12:05:34 +0100
Subject: Disallow empty patterns

---
 src/rabbit_parameter_validation.erl | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/rabbit_parameter_validation.erl')

diff --git a/src/rabbit_parameter_validation.erl b/src/rabbit_parameter_validation.erl
index 0247643d..04ddcc13 100644
--- a/src/rabbit_parameter_validation.erl
+++ b/src/rabbit_parameter_validation.erl
@@ -36,6 +36,8 @@ list(_Name, Term) when is_list(Term) ->
 list(Name, Term) ->
     {error, "~s should be list, actually was ~p", [Name, Term]}.
 
+regex(Name, Empty) when Empty == <<>> orelse Empty == [] ->
+    {error, "~s should be a regular expression but was empty.", [Name]};
 regex(Name, Term) ->
     case re:compile(Term) of
         {ok, _}         -> ok;
-- 
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