Infinite loop detected in Rails/LinkToBlank auto-correction

[r7kamura]

I encountered infinite loop when I run rubocop --auto-correct with the following code:

link_to(
  a,
  b,
  { target: '_blank' }
)

Expected behavior

Expected the code to be auto-corrected like this:

link_to(
  a,
  b,
  target: '_blank', rel: 'noopener'
)

Actual behavior

Encountered infinite loop:

Infinite loop detected in /tmp/rubocop-rails-link-to-blank-test/test.rb and caused by Layout/LineLength, Rails/LinkToBlank
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:290:in `block in iterate_until_no_changes'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:286:in `loop'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:286:in `iterate_until_no_changes'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:255:in `do_inspection_loop'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:132:in `block in file_offenses'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:157:in `file_offense_cache'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:131:in `file_offenses'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:122:in `process_file'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:101:in `block in each_inspected_file'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:100:in `each'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:100:in `reduce'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:100:in `each_inspected_file'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:86:in `inspect_files'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/runner.rb:47:in `run'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/cli/command/execute_runner.rb:26:in `block in execute_runner'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/cli/command/execute_runner.rb:52:in `with_redirect'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/cli/command/execute_runner.rb:25:in `execute_runner'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/cli/command/execute_runner.rb:17:in `run'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/cli/command.rb:11:in `run'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/cli/environment.rb:18:in `run'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/cli.rb:65:in `run_command'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/cli.rb:72:in `execute_runners'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/lib/rubocop/cli.rb:41:in `run'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/exe/rubocop:13:in `block in <top (required)>'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/2.7.0/benchmark.rb:308:in `realtime'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/rubocop-1.8.1/exe/rubocop:12:in `<top (required)>'
/home/r7kamura/.rbenv/versions/2.7.2/bin/rubocop:23:in `load'
/home/r7kamura/.rbenv/versions/2.7.2/bin/rubocop:23:in `<top (required)>'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/2.7.0/bundler/cli/exec.rb:63:in `load'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/2.7.0/bundler/cli/exec.rb:63:in `kernel_load'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/2.7.0/bundler/cli/exec.rb:28:in `run'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/2.7.0/bundler/cli.rb:476:in `exec'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/2.7.0/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/2.7.0/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/2.7.0/bundler/vendor/thor/lib/thor.rb:399:in `dispatch'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/2.7.0/bundler/cli.rb:30:in `dispatch'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/2.7.0/bundler/vendor/thor/lib/thor/base.rb:476:in `start'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/2.7.0/bundler/cli.rb:24:in `start'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/bundler-2.1.4/libexec/bundle:46:in `block in <top (required)>'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/2.7.0/bundler/friendly_errors.rb:123:in `with_friendly_errors'
/home/r7kamura/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/bundler-2.1.4/libexec/bundle:34:in `<top (required)>'
/home/r7kamura/.rbenv/versions/2.7.2/bin/bundle:23:in `load'
/home/r7kamura/.rbenv/versions/2.7.2/bin/bundle:23:in `<main>'

And the code was corrected to:

link_to(
  a,
  b,
  { target: '_blank' }, rel: 'noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener noopener'
)

Steps to reproduce the problem

Run bundle exec rubocop --auto-correct with the example code above.

$ ls
Gemfile  Gemfile.lock  test.rb
/tmp/rubocop-rails-link-to-blank-test
$ cat Gemfile
# frozen_string_literal: true

source 'https://rubygems.org'

gem 'rubocop'
gem 'rubocop-rails'
$ cat test.rb
# frozen_string_literal: true

link_to(
  a,
  b,
  { target: '_blank' }
)

RuboCop version

$ bundle exec rubocop -V
1.8.1 (using Parser 3.0.0.0, rubocop-ast 1.4.0, running on ruby 2.7.2 x86_64-linux)
  - rubocop-rails 2.9.1