Crash on `require rubygems` when running ruby with `-Eascii-8bit:ascii-8bit` and registry contains non-ASCII key

[ashie]

What problems are you experiencing?

When I try to load rubygems, it crashes with following error. To reproduce this, the following conditions must be satisfied:

• Make sure MSYS2 isn't installed
  • If you install it already, please rename the folder of MSYS2 installed.
• Run ruby with -Eascii-8bit:ascii-8bit
• Add a registry key with non-ASCII charater to HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\
  • I'm not sure but it seems that such poorly mannered software rarely exists.
  • I tried with a key HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\あいうえお

C:\Users\aho\Downloads\rubyinstaller-3.3.0-1-x64\bin>echo "require 'rubygems'" | ruby -Eascii-8bit:ascii-8bit
C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/3.3.0/rubygems.rb:1336:in `rescue in <top (required)>': U+3042 to ASCII-8BIT in conversion from UTF-16LE to UTF-8 to ASCII-8BIT (Encoding::UndefinedConversionError)
Loading the C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/3.3.0/rubygems/defaults/operating_system.rb file caused an error. This file is owned by your OS, not by rubygems upstream. Please find out which OS package this file belongs to and follow the guidelines from your OS to report the problem and ask for help.
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/3.3.0/rubygems.rb:1322:in `<top (required)>'
        from <internal:gem_prelude>:2:in `require'
        from <internal:gem_prelude>:2:in `<internal:gem_prelude>'
C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/3.3.0/win32/registry.rb:910:in `encode': U+3042 to ASCII-8BIT in conversion from UTF-16LE to UTF-8 to ASCII-8BIT (Encoding::UndefinedConversionError)
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/3.3.0/win32/registry.rb:910:in `export_string'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/3.3.0/win32/registry.rb:611:in `each_key'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/site_ruby/3.3.0/ruby_installer/runtime/msys2_installation.rb:71:in `block (2 levels) in iterate_msys_paths'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/3.3.0/win32/registry.rb:435:in `open'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/3.3.0/win32/registry.rb:542:in `open'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/site_ruby/3.3.0/ruby_installer/runtime/msys2_installation.rb:70:in `block in iterate_msys_paths'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/site_ruby/3.3.0/ruby_installer/runtime/msys2_installation.rb:68:in `each'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/site_ruby/3.3.0/ruby_installer/runtime/msys2_installation.rb:68:in `iterate_msys_paths'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/site_ruby/3.3.0/ruby_installer/runtime/msys2_installation.rb:102:in `msys_path'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/site_ruby/3.3.0/ruby_installer/runtime/msys2_installation.rb:115:in `mingw_bin_path'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/site_ruby/3.3.0/ruby_installer/runtime/msys2_installation.rb:125:in `enable_dll_search_paths'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/site_ruby/3.3.0/ruby_installer/runtime/singleton.rb:27:in `enable_dll_search_paths'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/3.3.0/rubygems/defaults/operating_system.rb:24:in `<top (required)>'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/3.3.0/rubygems.rb:1326:in `require'
        from C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64/lib/ruby/3.3.0/rubygems.rb:1326:in `<top (required)>'
        from <internal:gem_prelude>:2:in `require'
        from <internal:gem_prelude>:2:in `<internal:gem_prelude>'

We met this bug with Fluentd. Please see also https://github.com/fluent/fluent-package-builder/issues/616

Steps to reproduce

Please see above

What's the output from ridk version?

C:\Users\aho\Downloads\rubyinstaller-3.3.0-1-x64\bin>ridk version
---
ruby:
  path: C:/Users/aho/Downloads/rubyinstaller-3.3.0-1-x64
  version: 3.3.0
  platform: x64-mingw-ucrt
  cc: gcc.exe (Rev3, Built by MSYS2 project) 13.2.0
ruby_installer:
  package_version: 3.3.0-1
  git_commit: d808ebc
sh: GNU bash, version 5.2.21(1)-release (x86_64-pc-msys)
os: Microsoft Windows [Version 10.0.19045.3930]

Additional comment

Although using with -Eascii-8bit:ascii-8bit might not recommended for RubyInstaller, we are using it in our product (Fluentd). In this situation, this issue is hard to avoid in our product since it's occurred on very earlier stage in gem executables. So it would be happy if RubyInstaller provides a way to suppress this issue.

refs:

• https://github.com/oneclick/rubyinstaller2/issues/348
• https://github.com/fluent/fluent-package-builder/issues/616