[ruby-core:75507] [Ruby trunk Bug#12382] Deprecated constants will not print out warning when accessed directly

Issue #12382 has been updated by Nobuyoshi Nakada.

Description updated
Backport changed from 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN to 2.1: DONTNEED, 2.2: DONTNEED, 2.3: REQUIRED

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Bug #12382: Deprecated constants will not print out warning when accessed directly
https://bugs.ruby-lang.org/issues/12382#change-58623

* Author: Jan Lelis
* Status: Closed
* Priority: Normal
* Assignee: 
* ruby -v: ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-linux]
* Backport: 2.1: DONTNEED, 2.2: DONTNEED, 2.3: REQUIRED
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Hi,

the current behavior of `deprecate_constant` is a little confusing:

```ruby
module Namespace
  module Deprecated
  end

  deprecate_constant :Deprecated
end

puts "Referenced access:"
Namespace::Deprecated # warning: constant Namespace::Deprecated is deprecated

puts
puts "Direct access (from Object):"
include Namespace
Deprecated # warning: constant ::Deprecated is deprecated

puts
puts "Direct access (from inside namespace):"
module Namespace
  Deprecated # no warning
end
```

I would also expect a warning in the third case.




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