[Fix #12632] Fix an infinite loop error for Style/ArgumentsForwarding

Fixes #12632.

This PR fixes an infinite loop error when `EnforcedStyle: explicit` of
`Naming/BlockForwarding` with `Style/ArgumentsForwarding`.

changelog/fix_infinite_loop_error_for_style_argument_forwarding.md

@@ -0,0 +1 @@
+* [#12632](https://github.com/rubocop/rubocop/issues/12632): Fix an infinite loop error when `EnforcedStyle: explicit` of `Naming/BlockForwarding` with `Style/ArgumentsForwarding`. ([@koic][])

lib/rubocop/cop/style/arguments_forwarding.rb

@@ -104,7 +104,7 @@ module Style
       #   end
       #
       # @example RedundantBlockArgumentNames: ['blk', 'block', 'proc'] (default)
-      #   # bad
+      #   # bad - But it is good with `EnforcedStyle: explicit` set for `Naming/BlockForwarding`.
       #   def foo(&block)
       #     bar(&block)
       #   end
@@ -291,7 +291,7 @@ def register_forward_kwargs_offense(add_parens, def_arguments_or_send, kwrest_ar
         end
 
         def register_forward_block_arg_offense(add_parens, def_arguments_or_send, block_arg)
-          return if target_ruby_version <= 3.0 || block_arg.source == '&'
+          return if target_ruby_version <= 3.0 || block_arg.source == '&' || explicit_block_name?
 
           add_offense(block_arg, message: BLOCK_MSG) do |corrector|
             add_parens_if_missing(def_arguments_or_send, corrector) if add_parens
@@ -469,6 +469,13 @@ def missing_rest_arg_or_kwrest_arg?
               (@kwrest_arg_name && !forwarded_kwrest_arg)
           end
         end
+
+        def explicit_block_name?
+          block_forwarding_config = config.for_cop('Naming/BlockForwarding')
+          return false unless block_forwarding_config['Enabled']
+
+          block_forwarding_config['EnforcedStyle'] == 'explicit'
+        end
       end
     end
   end

spec/rubocop/cli/autocorrect_spec.rb

@@ -593,6 +593,30 @@ def some_method(form, **, &)
     RUBY
   end
 
+  it 'corrects `EnforcedStyle: explicit` of `Naming/BlockForwarding` with `Style/ArgumentsForwarding`' do
+    create_file('.rubocop.yml', <<~YAML)
+      AllCops:
+        TargetRubyVersion: 3.1
+      Naming/BlockForwarding:
+        EnforcedStyle: explicit
+    YAML
+    source = <<~RUBY
+      def some_method(&block)
+        render &block
+      end
+    RUBY
+    create_file('example.rb', source)
+    expect(cli.run([
+                     '--autocorrect',
+                     '--only', 'Naming/BlockForwarding,Style/ArgumentsForwarding'
+                   ])).to eq(0)
+    expect(File.read('example.rb')).to eq(<<~RUBY)
+      def some_method(&block)
+        render &block
+      end
+    RUBY
+  end
+
   describe 'trailing comma cops' do
     let(:source) do
       <<~RUBY