Issue #13090 has been updated by Yui NARUSE.

Backport changed from 2.2: DONTNEED, 2.3: DONTNEED, 2.4: REQUIRED to 2.2: DONTNEED, 2.3: DONTNEED, 2.4: DONE

ruby_2_4 r57847 merged revision(s) 57240.

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Bug #13090: Cannot use return statement in lambdas using instance_eval (MRI 2.4)
https://bugs.ruby-lang.org/issues/13090#change-63441

* Author: Nikita Shilnikov
* Status: Closed
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-linux]
* Backport: 2.2: DONTNEED, 2.3: DONTNEED, 2.4: DONE
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Hello,

I'm pretty sure I've found a bug after running specs for dry-initializer gem on MRI 2.4. 
I managed to find the minimal code to reproduce the issue:

MRI 2.3.3

```
$ ruby -e "instance_eval(&lambda { |_| return })"
$
```

MRI 2.4.0-p0

```
$ ruby -e "instance_eval(&lambda { |_| return })"
-e:1:in `block in <main>': unexpected return (LocalJumpError)
	from -e:1:in `instance_eval'
	from -e:1:in `<main>'
```

I _think_ lambda has been converted to an ordinary proc, but I didn't check it.

Best regards,
Nikita



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