[ruby-core:75110] [Ruby trunk Bug#12271] `Time#to_time` removes timezone information

Issue #12271 has been updated by Shyouhei Urabe.


(It is up to the branch maintainers but) given the actual Rails breakage, my feeling is negative to classify this as something to backport.

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Bug #12271: `Time#to_time` removes timezone information
https://bugs.ruby-lang.org/issues/12271#change-58241

* Author: Kaneko Yuichiro
* Status: Closed
* Priority: Normal
* Assignee: 
* ruby -v: ruby 2.3.0p0 (2015-12-25 revision 53290) 
* Backport: 2.1: WONTFIX, 2.2: REQUIRED, 2.3: REQUIRED
----------------------------------------
```ruby
irb(main):001:0> RUBY_VERSION
=> "2.3.0"
irb(main):002:0> require 'date'
=> true
irb(main):003:0> ENV['TZ'] = 'US/Eastern'
=> "US/Eastern"
irb(main):004:0> time = Time.new(2005, 2, 21, 10, 11, 12, '+09:00')
=> 2005-02-21 10:11:12 +0900
irb(main):005:0> time.to_time
=> 2005-02-20 20:11:12 -0500
```

Same as https://bugs.ruby-lang.org/issues/12189, `Time#to_time` does not use self timezone.
I think it is better to make it to match with `DateTime#to_time` behavior.

---Files--------------------------------
time.diff (1.35 KB)


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