5 files changed, 13 insertions, 7 deletions
diff --git a/activerecord/lib/active_record.rb b/activerecord/lib/active_record.rb
index b5c17cb23b..2d98239052 100644
--- a/activerecord/lib/active_record.rb
+++ b/activerecord/lib/active_record.rb
@@ -25,9 +25,6 @@ activesupport_path = "#{File.dirname(__FILE__)}/../../activesupport/lib"
 $:.unshift(activesupport_path) if File.directory?(activesupport_path)
 require 'active_support'
 
-# TODO: Figure out what parts of AS are *actually* required and use those
-require 'active_support/core_ext'
-
 module ActiveRecord
   # TODO: Review explicit loads to see if they will automatically be handled by the initilizer.
   def self.load_all!
diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index 968b9bde5a..1400096ffb 100755
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -9,6 +9,7 @@ require 'active_support/core_ext/hash/deep_merge'
 require 'active_support/core_ext/hash/indifferent_access'
 require 'active_support/core_ext/hash/slice'
 require 'active_support/core_ext/string/behavior'
+require 'active_support/core_ext/symbol'
 require 'active_support/core/time'
 
 module ActiveRecord #:nodoc:
diff --git a/activerecord/lib/active_record/fixtures.rb b/activerecord/lib/active_record/fixtures.rb
index e30fcf9a4f..721114d9d0 100644
--- a/activerecord/lib/active_record/fixtures.rb
+++ b/activerecord/lib/active_record/fixtures.rb
@@ -1,6 +1,7 @@
 require 'erb'
 require 'yaml'
 require 'csv'
+require 'zlib'
 require 'active_support/dependencies'
 require 'active_support/test_case'
 require 'active_support/core_ext/logger'
@@ -434,6 +435,7 @@ end
 # Any fixture labeled "DEFAULTS" is safely ignored.
 
 class Fixtures < (RUBY_VERSION < '1.9' ? YAML::Omap : Hash)
+  MAX_ID = 2 ** 31 - 1
   DEFAULT_FILTER_RE = /\.ya?ml$/
 
   @@all_cached_fixtures = {}
@@ -525,11 +527,10 @@ class Fixtures < (RUBY_VERSION < '1.9' ? YAML::Omap : Hash)
     cached_fixtures(connection, table_names)
   end
 
-  # Returns a consistent identifier for +label+. This will always
-  # be a positive integer, and will always be the same for a given
-  # label, assuming the same OS, platform, and version of Ruby.
+  # Returns a consistent, platform-independent identifier for +label+.
+  # Identifiers are positive integers less than 2^32.
   def self.identify(label)
-    label.to_s.hash.abs
+    Zlib.crc32(label.to_s) % MAX_ID
   end
 
   attr_reader :table_name, :name
diff --git a/activerecord/lib/active_record/validations.rb b/activerecord/lib/active_record/validations.rb
index b6e848fa79..a18fb3f426 100644
--- a/activerecord/lib/active_record/validations.rb
+++ b/activerecord/lib/active_record/validations.rb
@@ -1,3 +1,5 @@
+require 'active_support/core_ext/integer/even_odd'
+
 module ActiveRecord
   # Raised by <tt>save!</tt> and <tt>create!</tt> when the record is invalid.  Use the
   # +record+ method to retrieve the record which did not validate.
diff --git a/activerecord/test/cases/fixtures_test.rb b/activerecord/test/cases/fixtures_test.rb
index 252bf4ff61..b07d4f3521 100644
--- a/activerecord/test/cases/fixtures_test.rb
+++ b/activerecord/test/cases/fixtures_test.rb
@@ -518,6 +518,11 @@ class FoxyFixturesTest < ActiveRecord::TestCase
     assert_equal(Fixtures.identify(:foo), Fixtures.identify(:foo))
   end
 
+  def test_identifies_consistently
+    assert_equal 1281023246, Fixtures.identify(:ruby)
+    assert_equal 2140105598, Fixtures.identify(:sapphire_2)
+  end
+
   TIMESTAMP_COLUMNS = %w(created_at created_on updated_at updated_on)
 
   def test_populates_timestamp_columns