From: "mame (Yusuke Endoh) via ruby-core" <ruby-core@...>
Date: 2025-05-10T05:33:58+00:00
Subject: [ruby-core:121959] [Ruby Bug#21317] Namespaces leak with object IDs

Issue #21317 has been updated by mame (Yusuke Endoh).


Did you actually test the code? `mod1.constants == mod2.constants` returns `true`.

```
$ cat main.rb
ns = Namespace.new
mod1 = Object
mod2 = ns::Object

p mod1 #=> Object
p mod2 #=> Object
p mod1.object_id == mod2.object_id #=> true
p mod1.constants == mod2.constants #=> true

$ RUBY_NAMESPACE=1 ./miniruby main.rb
./miniruby: warning: Namespace is experimental, and the behavior may change in the future!
See doc/namespace.md for know issues, etc.
Object
Object
true
true
```

It's great that you're splitting the ticket and discussing each topic in detail. Thank you for that.
That said, when creating tickets, please make sure to include the test code, what you expected to happen, and what actually happened, in the usual format.

----------------------------------------
Bug #21317: Namespaces leak with object IDs
https://bugs.ruby-lang.org/issues/21317#change-113073

* Author: fxn (Xavier Noria)
* Status: Open
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
Namespaces are not transparent for this program

```ruby
if mod1.object_id == mod2.object_id
  mod1.constants == mod2.constants
end
```

because it may fail for `mod1 = Object; mod2 = ns::Object`, which have the same object ID.



-- 
https://bugs.ruby-lang.org/
 ______________________________________________
 ruby-core mailing list -- ruby-core@ml.ruby-lang.org
 To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org
 ruby-core info -- https://ml.ruby-lang.org/mailman3/lists/ruby-core.ml.ruby-lang.org/