stop autovivifying on get

2 files changed, 35 insertions, 28 deletions

diff --git a/lib/Package/Stash.pm b/lib/Package/Stash.pm
index 6f0910c..6b95340 100644
--- a/lib/Package/Stash.pm
+++ b/lib/Package/Stash.pm
@@ -235,22 +235,7 @@ sub get_package_symbol {
     my $namespace = $self->namespace;
 
     if (!exists $namespace->{$name}) {
-        # assigning to the result of this function like
-        #   @{$stash->get_package_symbol('@ISA')} = @new_ISA
-        # makes the result not visible until the variable is explicitly
-        # accessed... in the case of @ISA, this might never happen
-        # for instance, assigning like that and then calling $obj->isa
-        # will fail. see t/005-isa.t
-        if ($type eq 'ARRAY' && $name ne 'ISA') {
-            $self->add_package_symbol($variable, []);
-        }
-        elsif ($type eq 'HASH') {
-            $self->add_package_symbol($variable, {});
-        }
-        else {
-            # FIXME
-            $self->add_package_symbol($variable)
-        }
+        $self->add_package_symbol($variable)
     }
 
     my $entry_ref = \$namespace->{$name};
diff --git a/t/004-get.t b/t/004-get.t
index 15e252f..89d7567 100644
--- a/t/004-get.t
+++ b/t/004-get.t
@@ -6,21 +6,43 @@ use Test::More;
 use Package::Stash;
 
 {
-    my $stash = Package::Stash->new('Foo');
-    my $val = $stash->get_package_symbol('%foo');
-    is(ref($val), 'HASH', "got something");
-    $val->{bar} = 1;
-    is_deeply($stash->get_package_symbol('%foo'), {bar => 1},
-              "got the right variable");
+    BEGIN {
+        my $stash = Package::Stash->new('Foo');
+        my $val = $stash->get_package_symbol('%foo');
+        is($val, undef, "got nothing yet");
+    }
+    {
+        no warnings 'void', 'once';
+        %Foo::foo;
+    }
+    BEGIN {
+        my $stash = Package::Stash->new('Foo');
+        my $val = $stash->get_package_symbol('%foo');
+        is(ref($val), 'HASH', "got something");
+        $val->{bar} = 1;
+        is_deeply($stash->get_package_symbol('%foo'), {bar => 1},
+                "got the right variable");
+    }
 }
 
 {
-    my $stash = Package::Stash->new('Bar');
-    my $val = $stash->get_package_symbol('@foo');
-    is(ref($val), 'ARRAY', "got something");
-    push @$val, 1;
-    is_deeply($stash->get_package_symbol('@foo'), [1],
-              "got the right variable");
+    BEGIN {
+        my $stash = Package::Stash->new('Bar');
+        my $val = $stash->get_package_symbol('@foo');
+        is($val, undef, "got something");
+    }
+    {
+        no warnings 'void', 'once';
+        @Bar::foo;
+    }
+    BEGIN {
+        my $stash = Package::Stash->new('Bar');
+        my $val = $stash->get_package_symbol('@foo');
+        is(ref($val), 'ARRAY', "got something");
+        push @$val, 1;
+        is_deeply($stash->get_package_symbol('@foo'), [1],
+                "got the right variable");
+    }
 }
 
 done_testing;