From: "bannable (Joe Truba) via ruby-core" <ruby-core@ml.ruby-lang.org>
To: ruby-core@ml.ruby-lang.org
Cc: "bannable (Joe Truba)" <noreply@ruby-lang.org>
Subject: [ruby-core:117467] [Ruby master Bug#20412] UTF-8 String encoding behavior differs between 3.2, 3.3 and master
Date: Tue, 09 Apr 2024 01:16:59 +0000 (UTC) [thread overview]
Message-ID: <redmine.journal-107856.20240409011659.15814@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-20412.20240406205835.15814@ruby-lang.org
Issue #20412 has been updated by bannable (Joe Truba).
@eti
etienne (Étienne Barrié) wrote in #note-3:
> Hey,
>
> I cannot reproduce using the ruby:3.2.3 docker image and with my local installation of Ruby 3.2.3 and 3.2.2.
>
> In all these cases, I get "OK" "is not valid UTF-8". I just changed the script to always use size 1 and bundler/inline:
>
The input size isn't set correctly after your change to the script:
```
➜ ~ ASDF_RUBY_VERSION=3.2.3 ruby repro.eti.rb 1
"RUBY: 3.2.3"
"OK: ciphertext_rbnacl is not valid UTF-8"
"OK: ciphertext_local is not valid UTF-8"
"OK: plaintext_rbnacl is not valid UTF-8"
"OK: plaintext_local is not valid UTF-8"
➜ ~ ASDF_RUBY_VERSION=3.2.3 ruby repro.rb
"RUBY: 3.2.3"
"OK: ciphertext_rbnacl is not valid UTF-8"
"FAIL: ciphertext_local is not valid UTF-8 and did not error during encoding to UTF-8"
"OK: plaintext_rbnacl is not valid UTF-8"
"FAIL: plaintext_local is not valid UTF-8 and did not error during encoding to UTF-8"
➜ ~ diff repro.eti.rb repro.rb
44,46c44
< SIZE = ARGV[0].to_i || 32
<
< input = ("\xC0" * SIZE) + ' '
---
> input = "\xC0"
➜ ~
```
----------------------------------------
Bug #20412: UTF-8 String encoding behavior differs between 3.2, 3.3 and master
https://bugs.ruby-lang.org/issues/20412#change-107856
* Author: bannable (Joe Truba)
* Status: Open
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
When a String that contains only a `\0` byte is mutated by an extension to an invalid UTF-8 sequence, calling `.encode('UTF-8')` does not consistently raise `UndefinedConversionError` across ruby versions. When the string is longer than 1 byte, all versions I've tested correctly raise `UndefinedConversionError`.
For Ruby 3.2, `UndefinedConversionError` being raised appears to depend on where the string was originally allocated.
For Ruby 3.3, `UndefinedConversionError` is never raised.
For master ad90fdd24c, `UndefinedConversionError` is always correctly raised.
I haven't been able to find a bug for this, but it seems like there is a fix in master that should be backported to at least 3.2 and 3.3.
I have not tested 3.1.
The attached reproducer depends on `rbnacl` because it is minimized from a cryptographic project, and I wasn't able to reduce it further.
## Expected Output
For all versions:
```
$ ruby repro.rb 1
"RUBY: [version]"
"OK: ciphertext_rbnacl is not valid UTF-8"
"OK: ciphertext_local is not valid UTF-8"
"OK: plaintext_rbnacl is not valid UTF-8"
"OK: plaintext_local is not valid UTF-8"
$ ruby repro.rb 2
"RUBY: [version]"
"OK: ciphertext_rbnacl is not valid UTF-8"
"OK: ciphertext_local is not valid UTF-8"
"OK: plaintext_rbnacl is not valid UTF-8"
"OK: plaintext_local is not valid UTF-8"
```
## Actual Output
### Ruby 3.2
```
$ ASDF_RUBY_VERSION=3.2.3 ruby -v; ASDF_RUBY_VERSION=3.2.3 ruby repro.rb 1
ruby 3.2.3 (2024-01-18 revision 52bb2ac0a6) [x86_64-linux]
"RUBY: 3.2.3"
"OK: ciphertext_rbnacl is not valid UTF-8"
"FAIL: ciphertext_local is not valid UTF-8 and did not error during encoding to UTF-8"
"OK: plaintext_rbnacl is not valid UTF-8"
"FAIL: plaintext_local is not valid UTF-8 and did not error during encoding to UTF-8"
$ ASDF_RUBY_VERSION=3.2.3 ruby -v; ASDF_RUBY_VERSION=3.2.3 ruby repro.rb 2
ruby 3.2.3 (2024-01-18 revision 52bb2ac0a6) [x86_64-linux]
"RUBY: 3.2.3"
"OK: ciphertext_rbnacl is not valid UTF-8"
"OK: ciphertext_local is not valid UTF-8"
"OK: plaintext_rbnacl is not valid UTF-8"
"OK: plaintext_local is not valid UTF-8"
```
### Ruby 3.3
```
$ ASDF_RUBY_VERSION=3.3.0 ruby -v; ASDF_RUBY_VERSION=3.3.0 ruby repro.rb 1
ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [x86_64-linux]
"RUBY: 3.3.0"
"FAIL: ciphertext_rbnacl is not valid UTF-8 and did not error during encoding to UTF-8"
"FAIL: ciphertext_local is not valid UTF-8 and did not error during encoding to UTF-8"
"FAIL: plaintext_rbnacl is not valid UTF-8 and did not error during encoding to UTF-8"
"FAIL: plaintext_local is not valid UTF-8 and did not error during encoding to UTF-8"
$ ASDF_RUBY_VERSION=3.3.0 ruby -v; ASDF_RUBY_VERSION=3.3.0 ruby repro.rb 2
ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [x86_64-linux]
"RUBY: 3.3.0"
"OK: ciphertext_rbnacl is not valid UTF-8"
"OK: ciphertext_local is not valid UTF-8"
"OK: plaintext_rbnacl is not valid UTF-8"
"OK: plaintext_local is not valid UTF-8"
```
### Ruby Master
```
$ ASDF_RUBY_VERSION=ruby-dev ruby -v; ASDF_RUBY_VERSION=ruby-dev ruby repro.rb 1
ruby 3.4.0dev (2024-04-06T17:33:16Z master ad90fdd24c) [x86_64-linux]
"RUBY: 3.4.0"
"OK: ciphertext_rbnacl is not valid UTF-8"
"OK: ciphertext_local is not valid UTF-8"
"OK: plaintext_rbnacl is not valid UTF-8"
"OK: plaintext_local is not valid UTF-8"
$ ASDF_RUBY_VERSION=ruby-dev ruby -v; ASDF_RUBY_VERSION=ruby-dev ruby repro.rb 2
ruby 3.4.0dev (2024-04-06T17:33:16Z master ad90fdd24c) [x86_64-linux]
"RUBY: 3.4.0"
"OK: ciphertext_rbnacl is not valid UTF-8"
"OK: ciphertext_local is not valid UTF-8"
"OK: plaintext_rbnacl is not valid UTF-8"
"OK: plaintext_local is not valid UTF-8"
```
---Files--------------------------------
repro.rb (2.31 KB)
--
https://bugs.ruby-lang.org/
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prev parent reply other threads:[~2024-04-09 1:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-06 20:58 [ruby-core:117449] [Ruby master Bug#20412] UTF-8 String encoding behavior differs between 3.2, 3.3 and master bannable (Joe Truba) via ruby-core
2024-04-07 7:06 ` [ruby-core:117452] " nobu (Nobuyoshi Nakada) via ruby-core
2024-04-08 8:56 ` [ruby-core:117464] " etienne via ruby-core
2024-04-09 1:16 ` bannable (Joe Truba) via ruby-core [this message]
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