Index: C:/Projects/workspace/rails/activerecord/test/base_test.rb
===================================================================
--- C:/Projects/workspace/rails/activerecord/test/base_test.rb	(revision 5212)
+++ C:/Projects/workspace/rails/activerecord/test/base_test.rb	(working copy)
@@ -26,6 +26,7 @@
 class Computer < ActiveRecord::Base; end
 class NonExistentTable < ActiveRecord::Base; end
 class TestOracleDefault < ActiveRecord::Base; end
+class ColumnlessClass < ActiveRecord::Base; end

 class LoosePerson < ActiveRecord::Base
   attr_protected :credit_rating, :administrator
@@ -150,7 +151,12 @@
     topic = Topic.new(:title => "New Topic")
     assert topic.save!
   end
-
+
+  def test_save_columnless
+    record = ColumnlessClass.new
+    assert record.save
+  end
+
   def test_hashes_not_mangled
     new_topic = { :title => "New Topic" }
     new_topic_values = { :title => "AnotherTopic" }
Index: C:/Projects/workspace/rails/activerecord/test/fixtures/db_definitions/sqlite.sql
===================================================================
--- C:/Projects/workspace/rails/activerecord/test/fixtures/db_definitions/sqlite.sql	(revision 5212)
+++ C:/Projects/workspace/rails/activerecord/test/fixtures/db_definitions/sqlite.sql	(working copy)
@@ -1,3 +1,7 @@
+CREATE TABLE 'columnless_classes' (
+  'id' INTEGER PRIMARY KEY NOT NULL
+);
+
 CREATE TABLE 'accounts' (
   'id' INTEGER PRIMARY KEY NOT NULL,
   'firm_id' INTEGER DEFAULT NULL,