Issue #11055 has been reported by Nobuyoshi Nakada.

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Bug #11055: autoload resets private_constant
https://bugs.ruby-lang.org/issues/11055

* Author: Nobuyoshi Nakada
* Status: Assigned
* Priority: Normal
* Assignee: Yukihiro Matsumoto
* ruby -v: 50203
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
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Is this behavior intentional?

Suppose the following file:

~~~
$ cat a/b.rb
class A; B = 1; end
~~~

This causes `NameError`.

~~~
$ ruby -I. -e 'class A;autoload :B, "a/b.rb"; private_constant :B; end' -e 'p A::B'
-e:2:in `<main>': private constant A::B referenced (NameError)
~~~

But after it got loaded, `A::B` becomes public.

~~~
$ ruby -I. -e 'class A;autoload :B, "a/b.rb"; private_constant :B; B; end' -e 'p A::B'
1
~~~




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