Infinite loop detected in Layout/DotPosition with EnforcedStyle: trailing

[sue445]

Infinite loop detected in Layout/DotPosition with EnforcedStyle: trailing

Example code

Gemfile

# frozen_string_literal: true

source 'https://rubygems.org'

git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }

gem 'rubocop', '1.22.2'

.rubocop.yml

AllCops:
  NewCops: disable

Layout/DotPosition:
  EnforcedStyle: trailing

bug_report.rb

array.
  map {}.uniq

---

Expected behavior

auto corrected with no error.

Actual behavior

bundle exec rubocop --only Layout/DotPosition --debug

$ bundle exec rubocop --only Layout/DotPosition --debug
For /Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report: configuration from /Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/.rubocop.yml
Default configuration from /Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/config/default.yml
Use parallel by default.
Running parallel inspection
Inspecting 2 files
Scanning /Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/Gemfile
Loading cache from /Users/sue445/.cache/rubocop_cache/7f0eee2f0b87c119e94624d01ad756c759477948/8c90a000d1999bcca87cf483d4740a636a6afc04/ffbe561692eebdbe99f29673aa6c1d017ca91772
.Scanning /Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/bug_report.rb
Loading cache from /Users/sue445/.cache/rubocop_cache/7f0eee2f0b87c119e94624d01ad756c759477948/8c90a000d1999bcca87cf483d4740a636a6afc04/9ce767ae58d712a1e2d4fe9bcaf78522e1d6bf91
C

Offenses:

bug_report.rb:2:9: C: [Correctable] Layout/DotPosition: Place the . on the previous line, together with the method call receiver.
  map {}.uniq
        ^

2 files inspected, 1 offense detected, 1 offense auto-correctable
Finished in 0.3527680000006512 seconds

bundle exec rubocop --only Layout/DotPosition --debug --auto-correct

$ bundle exec rubocop --only Layout/DotPosition --debug --auto-correct
For /Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report: configuration from /Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/.rubocop.yml
Default configuration from /Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/config/default.yml
Inspecting 2 files
Scanning /Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/Gemfile
.Scanning /Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/bug_report.rb
C

Offenses:

bug_report.rb:2:9: C: [Corrected] Layout/DotPosition: Place the . on the previous line, together with the method call receiver.
  map {}.uniq
        ^

1 file inspected, 1 offense detected, 1 offense corrected
Infinite loop detected in /Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/bug_report.rb and caused by Layout/DotPosition
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:298:in `check_for_infinite_loop'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:281:in `block in iterate_until_no_changes'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:280:in `loop'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:280:in `iterate_until_no_changes'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:249:in `do_inspection_loop'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:130:in `block in file_offenses'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:155:in `file_offense_cache'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:129:in `file_offenses'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:120:in `process_file'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:101:in `block in each_inspected_file'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:100:in `each'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:100:in `reduce'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:100:in `each_inspected_file'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:86:in `inspect_files'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/runner.rb:47:in `run'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/cli/command/execute_runner.rb:26:in `block in execute_runner'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/cli/command/execute_runner.rb:52:in `with_redirect'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/cli/command/execute_runner.rb:25:in `execute_runner'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/cli/command/execute_runner.rb:17:in `run'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/cli/command.rb:11:in `run'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/cli/environment.rb:18:in `run'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/cli.rb:71:in `run_command'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/cli.rb:78:in `execute_runners'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/lib/rubocop/cli.rb:47:in `run'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/exe/rubocop:12:in `block in <top (required)>'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/3.0.0/benchmark.rb:308:in `realtime'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/gems/rubocop-1.22.2/exe/rubocop:12:in `<top (required)>'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/bin/rubocop:23:in `load'
/Users/sue445/workspace/github.com/sue445/20211023_rubocop_bug_report/vendor/bundle/ruby/3.0.0/bin/rubocop:23:in `<top (required)>'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/3.0.0/bundler/cli/exec.rb:63:in `load'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/3.0.0/bundler/cli/exec.rb:63:in `kernel_load'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/3.0.0/bundler/cli/exec.rb:28:in `run'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/3.0.0/bundler/cli.rb:474:in `exec'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/3.0.0/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/3.0.0/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/3.0.0/bundler/vendor/thor/lib/thor.rb:392:in `dispatch'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/3.0.0/bundler/cli.rb:30:in `dispatch'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/3.0.0/bundler/vendor/thor/lib/thor/base.rb:485:in `start'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/3.0.0/bundler/cli.rb:24:in `start'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/gems/3.0.0/gems/bundler-2.2.22/libexec/bundle:49:in `block in <top (required)>'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/3.0.0/bundler/friendly_errors.rb:128:in `with_friendly_errors'
/Users/sue445/.rbenv/versions/3.0.2/lib/ruby/gems/3.0.0/gems/bundler-2.2.22/libexec/bundle:37:in `<top (required)>'
/Users/sue445/.rbenv/versions/3.0.2/bin/bundle:23:in `load'
/Users/sue445/.rbenv/versions/3.0.2/bin/bundle:23:in `<main>'
Finished in 0.2694740000006277 seconds

If I don't use EnforcedStyle: trailing, no error will occur

Steps to reproduce the problem

1. Save the example code at the beginning to local
2. Run bundle exec rubocop --only Layout/DotPosition --debug --auto-correct

RuboCop version

$ bundle exec rubocop -V
1.22.2 (using Parser 3.0.2.0, rubocop-ast 1.12.0, running on ruby 3.0.2 x86_64-darwin20)

1.22.1 is no problem

[koic]

This issue resolved by #10207 and it will be fixed in the next release. Thank you.