From: "MaxLap (Maxime Lapointe) via ruby-core" <ruby-core@...>
Date: 2024-02-26T14:28:05+00:00
Subject: [ruby-core:116950] [Ruby master Bug#20304] Memory leak when setting Encoding.default_internal

Issue #20304 has been reported by MaxLap (Maxime Lapointe).

----------------------------------------
Bug #20304: Memory leak when setting Encoding.default_internal
https://bugs.ruby-lang.org/issues/20304

* Author: MaxLap (Maxime Lapointe)
* Status: Open
* ruby -v: 3.3.0
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
Problem is present in Ruby 3.2.2, 3.2.3, 3.3.0. Didn't check before.


Put this in a file:
```
10.times do
  100000.times do
    Encoding.default_internal = nil
  end
  puts `ps -o rss= -p #{$$}`.to_i
end
```

Result:

```
$ ruby local.rb
27044
30212
33116
36284
39452
42620
45788
48956
51860
55028
```



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