When running rubocop foo.rb with the following .rubocop.yml:
AllCops: NewCops: enable TargetRubyVersion: 3.4
and foo.rb is the following file:
# frozen_string_literal: true Hash[1, Hash[:a, 'foo']]
I expect RuboCop to not encounter an error when autocorrecting.
Actual behaviorWhen running rubocop -A foo.rb --debug, I see the following output:
For /Users/aidanlavis/test-rubocop: configuration from /Users/aidanlavis/test-rubocop/.rubocop.yml
Default configuration from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/config/default.yml
Use parallel by default.
Skipping parallel inspection: only a single file needs inspection
Inspecting 1 file
Scanning /Users/aidanlavis/test-rubocop/foo.rb
Loading cache from /Users/aidanlavis/.cache/rubocop_cache/672bc1035bb67c84641889aa9000cb8d7fb7e66b/6d7a3b621ca1730e04accd938619e4bdab66cfb1/e1d72e8b7dd0368270c5e67cf10843f22c7a60cc
An error occurred while Style/HashConversion cop was inspecting /Users/aidanlavis/test-rubocop/foo.rb:3:8.
/Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter.rb:427:in 'Parser::Source::TreeRewriter#trigger_policy': Parser::Source::TreeRewriter detected clobbering (Parser::ClobberingError)
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter.rb:414:in 'Parser::Source::TreeRewriter#enforce_policy'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter/action.rb:234:in 'Method#call'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter/action.rb:234:in 'Parser::Source::TreeRewriter::Action#swallow'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter/action.rb:98:in 'Parser::Source::TreeRewriter::Action#with'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter/action.rb:125:in 'Parser::Source::TreeRewriter::Action#place_in_hierarchy'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter/action.rb:107:in 'Parser::Source::TreeRewriter::Action#do_combine'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter/action.rb:118:in 'Parser::Source::TreeRewriter::Action#place_in_hierarchy'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter/action.rb:132:in 'block in Parser::Source::TreeRewriter::Action#combine_children'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter/action.rb:131:in 'Array#each'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter/action.rb:131:in 'Enumerable#inject'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter/action.rb:131:in 'Parser::Source::TreeRewriter::Action#combine_children'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter/action.rb:222:in 'Parser::Source::TreeRewriter::Action#merge'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter/action.rb:105:in 'Parser::Source::TreeRewriter::Action#do_combine'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter/action.rb:31:in 'Parser::Source::TreeRewriter::Action#combine'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/parser-3.3.8.0/lib/parser/source/tree_rewriter.rb:143:in 'Parser::Source::TreeRewriter#merge!'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/base.rb:380:in 'RuboCop::Cop::Base#apply_correction'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/base.rb:459:in 'RuboCop::Cop::Base#attempt_correction'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/base.rb:440:in 'RuboCop::Cop::Base#use_corrector'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/base.rb:434:in 'RuboCop::Cop::Base#correct'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/base.rb:210:in 'RuboCop::Cop::Base#add_offense'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/style/hash_conversion.rb:130:in 'RuboCop::Cop::Style::HashConversion#multi_argument'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/style/hash_conversion.rb:66:in 'RuboCop::Cop::Style::HashConversion#on_send'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/commissioner.rb:143:in 'Kernel#public_send'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/commissioner.rb:143:in 'block (2 levels) in RuboCop::Cop::Commissioner#trigger_restricted_cops'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/commissioner.rb:171:in 'RuboCop::Cop::Commissioner#with_cop_error_handling'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/commissioner.rb:142:in 'block in RuboCop::Cop::Commissioner#trigger_restricted_cops'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/commissioner.rb:141:in 'Array#each'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/commissioner.rb:141:in 'RuboCop::Cop::Commissioner#trigger_restricted_cops'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/commissioner.rb:70:in 'RuboCop::Cop::Commissioner#on_send'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-ast-1.45.1/lib/rubocop/ast/traversal.rb:169:in 'block in RuboCop::AST::Traversal#on_send'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-ast-1.45.1/lib/rubocop/ast/traversal.rb:166:in 'Array#each'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-ast-1.45.1/lib/rubocop/ast/traversal.rb:166:in 'Enumerable#each_with_index'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-ast-1.45.1/lib/rubocop/ast/traversal.rb:166:in 'RuboCop::AST::Traversal#on_send'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/commissioner.rb:71:in 'RuboCop::Cop::Commissioner#on_send'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-ast-1.45.1/lib/rubocop/ast/traversal.rb:20:in 'RuboCop::AST::Traversal#walk'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/commissioner.rb:87:in 'RuboCop::Cop::Commissioner#investigate'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/team.rb:174:in 'RuboCop::Cop::Team#investigate_partial'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cop/team.rb:101:in 'RuboCop::Cop::Team#investigate'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:348:in 'block in RuboCop::Runner#inspect_file'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:347:in 'Array#each'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:347:in 'Enumerable#flat_map'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:347:in 'RuboCop::Runner#inspect_file'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:290:in 'block in RuboCop::Runner#do_inspection_loop'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:324:in 'block in RuboCop::Runner#iterate_until_no_changes'
from <internal:kernel>:168:in 'Kernel#loop'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:317:in 'RuboCop::Runner#iterate_until_no_changes'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:286:in 'RuboCop::Runner#do_inspection_loop'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:167:in 'block in RuboCop::Runner#file_offenses'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:192:in 'RuboCop::Runner#file_offense_cache'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:166:in 'RuboCop::Runner#file_offenses'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:154:in 'RuboCop::Runner#process_file'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:135:in 'block in RuboCop::Runner#each_inspected_file'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:134:in 'Array#each'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:134:in 'Enumerable#reduce'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:134:in 'RuboCop::Runner#each_inspected_file'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:120:in 'RuboCop::Runner#inspect_files'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/runner.rb:73:in 'RuboCop::Runner#run'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cli/command/execute_runner.rb:26:in 'block in RuboCop::CLI::Command::ExecuteRunner#execute_runner'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cli/command/execute_runner.rb:52:in 'RuboCop::CLI::Command::ExecuteRunner#with_redirect'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cli/command/execute_runner.rb:25:in 'RuboCop::CLI::Command::ExecuteRunner#execute_runner'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cli/command/execute_runner.rb:17:in 'RuboCop::CLI::Command::ExecuteRunner#run'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cli/command.rb:11:in 'RuboCop::CLI::Command.run'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cli/environment.rb:18:in 'RuboCop::CLI::Environment#run'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cli.rb:122:in 'RuboCop::CLI#run_command'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cli.rb:129:in 'RuboCop::CLI#execute_runners'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cli.rb:51:in 'block in RuboCop::CLI#run'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cli.rb:81:in 'RuboCop::CLI#profile_if_needed'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/lib/rubocop/cli.rb:43:in 'RuboCop::CLI#run'
from /Users/aidanlavis/.rbenv/versions/3.4.4/lib/ruby/gems/3.4.0/gems/rubocop-1.77.0/exe/rubocop:19:in '<top (required)>'
from /Users/aidanlavis/.rbenv/versions/3.4.4/bin/rubocop:25:in 'Kernel#load'
from /Users/aidanlavis/.rbenv/versions/3.4.4/bin/rubocop:25:in '<main>'
C
Offenses:
foo.rb:3:1: C: [Corrected] Layout/SpaceInsideHashLiteralBraces: Space inside { missing.
{1 => Hash[:a, 'foo']}
^
foo.rb:3:1: C: [Corrected] Style/HashConversion: Prefer literal hash to Hash[arg1, arg2, ...].
Hash[1, Hash[:a, 'foo']]
^^^^^^^^^^^^^^^^^^^^^^^^
foo.rb:3:7: C: [Corrected] Style/HashConversion: Prefer literal hash to Hash[arg1, arg2, ...].
{1 => Hash[:a, 'foo']}
^^^^^^^^^^^^^^^
foo.rb:3:8: C: [Corrected] Layout/SpaceInsideHashLiteralBraces: Space inside { missing.
{ 1 => {:a => 'foo'} }
^
foo.rb:3:9: C: [Corrected] Style/HashSyntax: Use the new Ruby 1.9 hash syntax.
{ 1 => {:a => 'foo'} }
^^^^^
foo.rb:3:20: C: [Corrected] Layout/SpaceInsideHashLiteralBraces: Space inside } missing.
{ 1 => {:a => 'foo'} }
^
foo.rb:3:22: C: [Corrected] Layout/SpaceInsideHashLiteralBraces: Space inside } missing.
{1 => Hash[:a, 'foo']}
^
1 file inspected, 7 offenses detected, 7 offenses corrected
1 error occurred:
An error occurred while Style/HashConversion cop was inspecting /Users/aidanlavis/test-rubocop/foo.rb:3:8.
configuration from /Users/aidanlavis/test-rubocop/.rubocop.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:
1.77.0 (using Parser 3.3.8.0, rubocop-ast 1.45.1, analyzing as Ruby 2.7, running on ruby 3.4.4) [arm64-darwin24]
Finished in 0.08734100000583567 seconds
Run rubocop -A foo.rb where foo.rb is the above file.
> rubocop -V
1.77.0 (using Parser 3.3.8.0, Prism 1.4.0, rubocop-ast 1.45.1, analyzing as Ruby 3.4, running on ruby 3.4.4) [arm64-darwin24]
Likely related to #14306, which was fixed in v1.77.0.
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