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Style/SafeNavigation crashes with 1.76.0 #14233

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#14234
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Style/SafeNavigation crashes with 1.76.0#14233
#14234
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@dentarg

Description

@dentarg
dentarg
opened on Jun 4, 2025

Consider this code

$ cat safe_navigation-1.76.0.rb
foo = "foo"
bar = foo ? foo[0..1] : nil
$ cat Gemfile
# frozen_string_literal: true

source "https://rubygems.org"
gem "rubocop", "~> 1.76"

$ cat Gemfile.lock
GEM
  remote: https://rubygems.org/
  specs:
    ast (2.4.3)
    json (2.12.2)
    language_server-protocol (3.17.0.5)
    lint_roller (1.1.0)
    parallel (1.27.0)
    parser (3.3.8.0)
      ast (~> 2.4.1)
      racc
    prism (1.4.0)
    racc (1.8.1)
    rainbow (3.1.1)
    regexp_parser (2.10.0)
    rubocop (1.76.0)
      json (~> 2.3)
      language_server-protocol (~> 3.17.0.2)
      lint_roller (~> 1.1.0)
      parallel (~> 1.10)
      parser (>= 3.3.0.2)
      rainbow (>= 2.2.2, < 4.0)
      regexp_parser (>= 2.9.3, < 3.0)
      rubocop-ast (>= 1.45.0, < 2.0)
      ruby-progressbar (~> 1.7)
      unicode-display_width (>= 2.4.0, < 4.0)
    rubocop-ast (1.45.0)
      parser (>= 3.3.7.2)
      prism (~> 1.4)
    ruby-progressbar (1.13.0)
    unicode-display_width (3.1.4)
      unicode-emoji (~> 4.0, >= 4.0.4)
    unicode-emoji (4.0.4)

PLATFORMS
  ruby

DEPENDENCIES
  rubocop (~> 1.76)

BUNDLED WITH
   2.6.8
$ bundle exec rubocop --debug --only Style/SafeNavigation safe_navigation-1.76.0.rb
For /Users/dentarg/code/rubocop-testing/SafeNavigation: Default configuration from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/config/default.yml
Use parallel by default.
Skipping parallel inspection: only a single file needs inspection
Inspecting 1 file
Scanning /Users/dentarg/code/rubocop-testing/SafeNavigation/safe_navigation-1.76.0.rb
An error occurred while Style/SafeNavigation cop was inspecting /Users/dentarg/code/rubocop-testing/SafeNavigation/safe_navigation-1.76.0.rb:2:6.
/Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/corrector.rb:111:in 'RuboCop::Cop::Corrector#to_range': Expected a Parser::Source::Range, Comment or RuboCop::AST::Node, got NilClass (TypeError)
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/corrector.rb:120:in 'RuboCop::Cop::Corrector#check_range_validity'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter.rb:398:in 'Parser::Source::TreeRewriter#combine'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter.rb:207:in 'Parser::Source::TreeRewriter#wrap'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter.rb:231:in 'Parser::Source::TreeRewriter#insert_before'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/style/safe_navigation.rb:153:in 'block in RuboCop::Cop::Style::SafeNavigation#on_if'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/style/safe_navigation.rb:193:in 'block in RuboCop::Cop::Style::SafeNavigation#report_offense'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/base.rb:426:in 'RuboCop::Cop::Base#correct'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/base.rb:210:in 'RuboCop::Cop::Base#add_offense'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/style/safe_navigation.rb:185:in 'RuboCop::Cop::Style::SafeNavigation#report_offense'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/style/safe_navigation.rb:152:in 'RuboCop::Cop::Style::SafeNavigation#on_if'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/commissioner.rb:107:in 'Kernel#public_send'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/commissioner.rb:107:in 'block (2 levels) in RuboCop::Cop::Commissioner#trigger_responding_cops'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/commissioner.rb:171:in 'RuboCop::Cop::Commissioner#with_cop_error_handling'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/commissioner.rb:106:in 'block in RuboCop::Cop::Commissioner#trigger_responding_cops'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/commissioner.rb:105:in 'Array#each'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/commissioner.rb:105:in 'RuboCop::Cop::Commissioner#trigger_responding_cops'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/commissioner.rb:69:in 'RuboCop::Cop::Commissioner#on_if'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-ast-1.45.0/lib/rubocop/ast/traversal.rb:144:in 'RuboCop::AST::Traversal#on_lvasgn'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/commissioner.rb:71:in 'RuboCop::Cop::Commissioner#on_lvasgn'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-ast-1.45.0/lib/rubocop/ast/traversal.rb:146:in 'block in RuboCop::AST::Traversal#on_dstr'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-ast-1.45.0/lib/rubocop/ast/traversal.rb:146:in 'Array#each'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-ast-1.45.0/lib/rubocop/ast/traversal.rb:146:in 'RuboCop::AST::Traversal#on_dstr'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/commissioner.rb:71:in 'RuboCop::Cop::Commissioner#on_begin'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-ast-1.45.0/lib/rubocop/ast/traversal.rb:20:in 'RuboCop::AST::Traversal#walk'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/commissioner.rb:87:in 'RuboCop::Cop::Commissioner#investigate'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/team.rb:174:in 'RuboCop::Cop::Team#investigate_partial'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cop/team.rb:108:in 'RuboCop::Cop::Team#investigate'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:348:in 'block in RuboCop::Runner#inspect_file'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:347:in 'Array#each'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:347:in 'Enumerable#flat_map'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:347:in 'RuboCop::Runner#inspect_file'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:290:in 'block in RuboCop::Runner#do_inspection_loop'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:324:in 'block in RuboCop::Runner#iterate_until_no_changes'
  from <internal:kernel>:168:in 'Kernel#loop'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:317:in 'RuboCop::Runner#iterate_until_no_changes'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:286:in 'RuboCop::Runner#do_inspection_loop'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:167:in 'block in RuboCop::Runner#file_offenses'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:192:in 'RuboCop::Runner#file_offense_cache'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:166:in 'RuboCop::Runner#file_offenses'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:154:in 'RuboCop::Runner#process_file'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:135:in 'block in RuboCop::Runner#each_inspected_file'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:134:in 'Array#each'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:134:in 'Enumerable#reduce'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:134:in 'RuboCop::Runner#each_inspected_file'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:120:in 'RuboCop::Runner#inspect_files'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/runner.rb:73:in 'RuboCop::Runner#run'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cli/command/execute_runner.rb:26:in 'block in RuboCop::CLI::Command::ExecuteRunner#execute_runner'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cli/command/execute_runner.rb:52:in 'RuboCop::CLI::Command::ExecuteRunner#with_redirect'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cli/command/execute_runner.rb:25:in 'RuboCop::CLI::Command::ExecuteRunner#execute_runner'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cli/command/execute_runner.rb:17:in 'RuboCop::CLI::Command::ExecuteRunner#run'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cli/command.rb:11:in 'RuboCop::CLI::Command.run'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cli/environment.rb:18:in 'RuboCop::CLI::Environment#run'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cli.rb:122:in 'RuboCop::CLI#run_command'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cli.rb:129:in 'RuboCop::CLI#execute_runners'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cli.rb:51:in 'block in RuboCop::CLI#run'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cli.rb:81:in 'RuboCop::CLI#profile_if_needed'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/lib/rubocop/cli.rb:43:in 'RuboCop::CLI#run'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/exe/rubocop:19:in '<top (required)>'
  from /Users/dentarg/.arm64_rubies/3.4.3/bin/rubocop:25:in 'Kernel#load'
  from /Users/dentarg/.arm64_rubies/3.4.3/bin/rubocop:25:in '<top (required)>'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/site_ruby/3.4.0/bundler/cli/exec.rb:59:in 'Kernel.load'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/site_ruby/3.4.0/bundler/cli/exec.rb:59:in 'Bundler::CLI::Exec#kernel_load'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/site_ruby/3.4.0/bundler/cli/exec.rb:23:in 'Bundler::CLI::Exec#run'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/site_ruby/3.4.0/bundler/cli.rb:452:in 'Bundler::CLI#exec'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/site_ruby/3.4.0/bundler/vendor/thor/lib/thor/command.rb:28:in 'Bundler::Thor::Command#run'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/site_ruby/3.4.0/bundler/vendor/thor/lib/thor/invocation.rb:127:in 'Bundler::Thor::Invocation#invoke_command'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/site_ruby/3.4.0/bundler/vendor/thor/lib/thor.rb:538:in 'Bundler::Thor.dispatch'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/site_ruby/3.4.0/bundler/cli.rb:35:in 'Bundler::CLI.dispatch'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/site_ruby/3.4.0/bundler/vendor/thor/lib/thor/base.rb:584:in 'Bundler::Thor::Base::ClassMethods#start'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/site_ruby/3.4.0/bundler/cli.rb:29:in 'Bundler::CLI.start'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/bundler-2.6.8/exe/bundle:28:in 'block in <top (required)>'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/site_ruby/3.4.0/bundler/friendly_errors.rb:117:in 'Bundler.with_friendly_errors'
  from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/bundler-2.6.8/exe/bundle:20:in '<top (required)>'
  from /Users/dentarg/.arm64_rubies/3.4.3/bin/bundle:25:in 'Kernel#load'
  from /Users/dentarg/.arm64_rubies/3.4.3/bin/bundle:25:in '<main>'
.

1 file inspected, no offenses detected

1 error occurred:
An error occurred while Style/SafeNavigation cop was inspecting /Users/dentarg/code/rubocop-testing/SafeNavigation/safe_navigation-1.76.0.rb:2:6.
configuration from /Users/dentarg/.arm64_rubies/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.76.0/config/default.yml
Errors are usually caused by RuboCop bugs.
Please, update to the latest RuboCop version if not already in use, and report a bug if the issue still occurs on this version.
https://github.com/rubocop/rubocop/issues

Mention the following information in the issue report:
1.76.0 (using Parser 3.3.8.0, Prism 1.4.0, default, rubocop-ast 1.45.0, analyzing as Ruby 3.4, running on ruby 3.4.3) [arm64-darwin23]
Finished in 0.07380400015972555 seconds

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