[Fix #12687] Fix a false positive for Lint/Void

changelog/fix_false_positive_for_lint_void.md

@@ -0,0 +1 @@
+* [#12687](https://github.com/rubocop/rubocop/issues/12687): Fix a false positive for `Lint/Void` when `each` block with conditional expressions that has multiple statements. ([@koic][])

lib/rubocop/cop/lint/void.rb

@@ -100,7 +100,12 @@ def check_begin(node)
           expressions = *node
           expressions.pop unless in_void_context?(node)
           expressions.each do |expr|
-            check_void_op(expr)
+            check_void_op(expr) do
+              block_node = node.each_ancestor(:block).first
+
+              block_node&.method?(:each)
+            end
+
             check_expression(expr)
           end
         end

spec/rubocop/cop/lint/void_spec.rb

@@ -614,6 +614,18 @@ def foo=(rhs)
     RUBY
   end
 
+  it 'does not register `#each` block with conditional expressions that has multiple statements' do
+    expect_no_offenses(<<~RUBY)
+      enumerator_as_filter.each do |item|
+        puts item
+
+        # The `filter` method is used to filter for matches with `42`.
+        # In this case, it's not void.
+        item == 42
+      end
+    RUBY
+  end
+
   context 'Ruby 2.7', :ruby27 do
     it 'registers two offenses for void literals in `#tap` method' do
       expect_offense(<<~RUBY)