From 26eb0e7a6a9fd292fe305e389089e4611e223e0d Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Wed, 20 Oct 2010 15:13:40 -0500
Subject: die if the source doesn't return a subroutine reference

---
 lib/Eval/Closure.pm | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/Eval/Closure.pm b/lib/Eval/Closure.pm
index 1ce0327..e45cb98 100644
--- a/lib/Eval/Closure.pm
+++ b/lib/Eval/Closure.pm
@@ -59,7 +59,13 @@ sub _clean_eval_closure {
     }
 
     my $code = eval _make_source(@_);
-    ($code, $@);
+
+    if (!ref($code) || ref($code) ne 'CODE') {
+        undef $code;
+        $@ = "The 'source' parameter must return a subroutine reference";
+    }
+
+    return ($code, $@);
 }
 
 sub _make_source {
-- 
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