From: "nobu (Nobuyoshi Nakada) via ruby-core" <ruby-core@...>
Date: 2024-12-30T07:36:33+00:00
Subject: [ruby-core:120444] [Ruby master Bug#20992] `eval(ascii_encoded_code)` raises EncodingError when multibyte local variable exists

Issue #20992 has been updated by nobu (Nobuyoshi Nakada).

Assignee set to prism
Backport changed from 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN to 3.1: DONTNEED, 3.2: DONTNEED, 3.3: DONTNEED, 3.4: REQUIRED

----------------------------------------
Bug #20992: `eval(ascii_encoded_code)` raises EncodingError when multibyte local variable exists
https://bugs.ruby-lang.org/issues/20992#change-111221

* Author: tompng (tomoya ishida)
* Status: Open
* Assignee: prism
* ruby -v: ruby 3.5.0dev (2024-12-28T09:40:37Z master e4ec2128ae) +YJIT +MN +PRISM [arm64-darwin22]
* Backport: 3.1: DONTNEED, 3.2: DONTNEED, 3.3: DONTNEED, 3.4: REQUIRED
----------------------------------------
~~~ruby
#coding: utf-8
��=1
eval '1+2'.encode('ascii')
~~~

~~~
$ ruby file.rb
file.rb:3:in 'Kernel#eval': invalid symbol in encoding US-ASCII :"\xCE\xB1" (EncodingError)
	from file.rb:3:in '<main>'
~~~

Running the file below with `LANG=C ruby file.rb` will make IRB unresponsive
~~~ruby
#coding: utf-8
��=1
binding.irb
~~~

~~~
$ LANG=C ruby file.rb
From: file.rb @ line 3 :

    1: #coding: utf-8
    2: ��=1
 => 3: binding.irb
irb(main):001> 1
<internal:kernel>:168:in 'Kernel#loop': invalid symbol in encoding US-ASCII :"\xCE\xB1" (EncodingError)
	from <internal:prelude>:5:in 'Binding#irb'
	from file.rb:3:in '<main>'
irb(main):002> 
~~~



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