Explicitly die if get_all_package_symbols is called as a class method

diff --git a/lib/Class/MOP/Package.pm b/lib/Class/MOP/Package.pm
index 63299f8..a7ba14a 100644 (file)
--- a/lib/Class/MOP/Package.pm
+++ b/lib/Class/MOP/Package.pm
@@ -276,6 +276,10 @@ sub list_all_package_symbols {
 
 sub get_all_package_symbols {
     my ($self, $type_filter) = @_;
+
+    die "Cannot call get_all_package_symbols as a class method"
+        unless ref $self;
+
     my $namespace = $self->namespace;
 
     return %$namespace unless defined $type_filter;