From: "cvss (Kirill Vechera)" <noreply@...>
Date: 2021-12-06T17:38:00+00:00
Subject: [ruby-core:106522] [Ruby master Bug#18390] Enumerator::Lazy#find returns invalid value

Issue #18390 has been updated by cvss (Kirill Vechera).


I just found that playground runs Opal, not MRI. Sorry for incorrect addressee, please close the issue.

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Bug #18390: Enumerator::Lazy#find returns invalid value
https://bugs.ruby-lang.org/issues/18390#change-95182

* Author: cvss (Kirill Vechera)
* Status: Open
* Priority: Normal
* ruby -v: 3.0.2
* Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
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There is a regression bug in `#find`
```ruby
# RUBY_VERSION 3.0.2
[1, 2, 3, 4].lazy.find(&:even?) # => nil (ERROR!), expected 2
[1, 2, 3, 4].find(&:even?).find(&:even?) # => 2
# RUBY_VERSION 2.4.1
[1, 2, 3, 4].lazy.find(&:even?) # => 2
[1, 2, 3, 4].find(&:even?) # => 2
```



---Files--------------------------------
ruby_bug.png (8.8 KB)


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