no ref in the defaults

[gitmo/Class-MOP.git] / lib / Class / MOP / Attribute.pm

diff --git a/lib/Class/MOP/Attribute.pm b/lib/Class/MOP/Attribute.pm
index ca93efe..4e3eb09 100644 (file)
--- a/lib/Class/MOP/Attribute.pm
+++ b/lib/Class/MOP/Attribute.pm
@@ -7,7 +7,7 @@ use warnings;
 use Carp         'confess';
 use Scalar::Util 'blessed', 'reftype', 'weaken';
 
-our $VERSION   = '0.11';
+our $VERSION   = '0.12';
 our $AUTHORITY = 'cpan:STEVAN';
 
 sub meta { 
@@ -34,6 +34,11 @@ sub new {
     $options{init_arg} = $name 
         if not exists $options{init_arg};
             
+    (is_default_a_coderef(\%options))
+        || confess("References are not allowed as default values, you must ". 
+                   "wrap then in a CODE reference (ex: sub { [] } and not [])")
+            if exists $options{default} && ref $options{default};      
+            
     bless {
         name      => $name,
         accessor  => $options{accessor},