[ruby-core:111460] [Ruby master Bug#19271] irb ignores rbs and debug with YJIT enabled

Issue #19271 has been updated by st0012 (Stan Lo).


I can reproduce this without `IRB`:

```
$ RUBY_YJIT_ENABLE=1 ruby -e "require 'foo'"
Ignoring debug-1.7.1 because its extensions are not built. Try: gem pristine debug --version 1.7.1
Ignoring rbs-2.8.2 because its extensions are not built. Try: gem pristine rbs --version 2.8.2
<internal:/Users/st0012/.rbenv/versions/3.2.0/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:85:in `require': cannot load such file -- foo (LoadError)
	from <internal:/Users/st0012/.rbenv/versions/3.2.0/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
	from -e:1:in `<main>'
```

Even without `RUBY_YJIT_ENABLE=1` too:

(This one doesn't have message about `debug` because I installed it during testing)

```
$ ruby -e "require 'foo'" 
Ignoring rbs-2.8.2 because its extensions are not built. Try: gem pristine rbs --version 2.8.2
<internal:/Users/st0012/.rbenv/versions/3.2.0/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:85:in `require': cannot load such file -- foo (LoadError)
	from <internal:/Users/st0012/.rbenv/versions/3.2.0/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
	from -e:1:in `<main>'
```

I think it's actually related to Ruby's `LoadError` and it's just happen that `IRB` triggers one during initialization.



----------------------------------------
Bug #19271: irb ignores rbs and debug with YJIT enabled
https://bugs.ruby-lang.org/issues/19271#change-100829

* Author: olivierlacan (Olivier Lacan)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.1.2p20 (2022-04-12 revision 4491bb740a) [arm64-darwin21]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN
----------------------------------------
Not sure this is a serious issue but when starting IRB with YJIT enabled this (potentially confusing) message is immediately printed: 

```
$ RUBY_YJIT_ENABLE=1 irb
Ignoring debug-1.7.1 because its extensions are not built. Try: gem pristine debug --version 1.7.1
Ignoring rbs-2.8.2 because its extensions are not built. Try: gem pristine rbs --version 2.8.2
irb(main):001:0>
```

This is on a fresh installation of Ruby 3.2.0 with an empty Gemfile in the directory. 

I haven't run gem pristine on any gem since I hadn't installed any gems after installing Ruby 3.2.0 here but FYI: 

```
$ gem list | grep "rbs\|debug"
debug (1.7.1)
rbs (2.8.2)
```

This seems to suggest that C extensions weren't built for those gems when they were installed during the Ruby installation process. Just to be safe I checked and while I do use rbenv and ruby-build to compile and manage Rubies, I don't have a default gem installer set up so as far as I know these gems weren't installed by my system.



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