@@ -1,5 +1,7 @@ *2.1.1 (next release)* +* Fix Ruby's Time marshaling bug in pre-1.9 versions of Ruby: utc instances are now correctly unmarshaled with a utc zone instead of the system local zone [#900 state:resolved]:activesupport/CHANGELOG + * TimeWithZone: when crossing DST boundary, treat Durations of days, months or years as variable-length, and all other values as absolute length. A time + 24.hours will advance exactly 24 hours, but a time + 1.day will advance 23-25 hours, depending on the day. Ensure consistent behavior across all advancing methods [Geoff Buesing] * Fix TimeWithZone unmarshaling: coerce unmarshaled Time instances to utc, because Ruby's marshaling of Time instances doesn't respect the zone [Geoff Buesing] activesupport/CHANGELOG @@ -1,11 +1,32 @@ require 'date' require 'time' -# Ruby 1.8-cvs and 1.9 define private Time#to_date class Time + # Ruby 1.8-cvs and 1.9 define private Time#to_date %w(to_date to_datetime).each do |method| public method if private_instance_methods.include?(method) end + + # Pre-1.9 versions of Ruby have a bug with marshaling Time instances, where utc instances are + # unmarshaled in the local zone, instead of utc. We're layering behavior on the _dump and _load + # methods so that utc instances can be flagged on dump, and coerced back to utc on load. + if RUBY_VERSION < '1.9' + class << self + alias_method :_original_load, :_load + def _load(marshaled_time) + time = _original_load(marshaled_time) + utc = time.send(:remove_instance_variable, '@marshal_with_utc_coercion') + utc ? time.utc : time + end + end + + alias_method :_original_dump, :_dump + def _dump(*args) + obj = self.frozen? ? self.dup : self + obj.instance_variable_set('@marshal_with_utc_coercion', utc?) + obj._original_dump(*args) + end + end end require 'active_support/core_ext/time/behavior' activesupport/lib/active_support/core_ext/time.rb @@ -620,3 +620,37 @@ class TimeExtCalculationsTest < Test::Unit::TestCase old_tz ? ENV['TZ'] = old_tz : ENV.delete('TZ') end end + +class TimeExtMarshalingTest < Test::Unit::TestCase + def test_marshaling_with_utc_instance + t = Time.utc(2000) + marshaled = Marshal.dump t + unmarshaled = Marshal.load marshaled + assert_equal t, unmarshaled + assert_equal t.zone, unmarshaled.zone + end + + def test_marshaling_with_local_instance + t = Time.local(2000) + marshaled = Marshal.dump t + unmarshaled = Marshal.load marshaled + assert_equal t, unmarshaled + assert_equal t.zone, unmarshaled.zone + end + + def test_marshaling_with_frozen_utc_instance + t = Time.utc(2000).freeze + marshaled = Marshal.dump t + unmarshaled = Marshal.load marshaled + assert_equal t, unmarshaled + assert_equal t.zone, unmarshaled.zone + end + + def test_marshaling_with_frozen_local_instance + t = Time.local(2000).freeze + marshaled = Marshal.dump t + unmarshaled = Marshal.load marshaled + assert_equal t, unmarshaled + assert_equal t.zone, unmarshaled.zone + end +end activesupport/test/core_ext/time_ext_test.rb e710902f26a2eed7adb22082067df449b9641d00 Luca Guidi guidi.luca@gmail.com http://github.com/rails/rails/commit/4d71e99d1fc1f57900288e008d7528c339138cf0 4d71e99d1fc1f57900288e008d7528c339138cf0 2008-08-27T07:12:24-07:00 2008-08-27T02:25:20-07:00 Fix Ruby's Time marshaling bug in pre-1.9 versions of Ruby: utc instances are now correctly unmarshaled with a utc zone instead of the system local zone [#900 state:resolved] 2e29eb4eec3bae3dae3971dbc3c67e8488f01146 gbuesing gbuesing@gmail.com