[Fix #10036] Mark Style/StructInheritance as unsafe auto-correction

Fixes #10036. This PR marks `Style/StructInheritance` as unsafe auto-correction.
rubocop · Aug 24, 2021 · b00265b · b00265b
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diff --git a/changelog/change_mark_style_struct_inheritance_as_unsafe_auto_correction.md b/changelog/change_mark_style_struct_inheritance_as_unsafe_auto_correction.md
@@ -0,0 +1 @@
+* [#10036](https://github.com/rubocop/rubocop/issues/10036): Mark `Style/StructInheritance` as unsafe auto-correction. ([@koic][])
diff --git a/config/default.yml b/config/default.yml
@@ -4694,8 +4694,9 @@ Style/StructInheritance:
   Description: 'Checks for inheritance from Struct.new.'
   StyleGuide: '#no-extend-struct-new'
   Enabled: true
+  SafeAutoCorrect: false
   VersionAdded: '0.29'
-  VersionChanged: '0.86'
+  VersionChanged: '<<next>>'
 
 Style/SwapValues:
   Description: 'This cop enforces the use of shorthand-style swapping of 2 variables.'

diff --git a/lib/rubocop/cop/style/struct_inheritance.rb b/lib/rubocop/cop/style/struct_inheritance.rb
@@ -5,6 +5,9 @@ module Cop
     module Style
       # This cop checks for inheritance from Struct.new.
       #
+      # It is marked as unsafe auto-correction because it will change the
+      # inheritance tree (e.g. return value of `Module#ancestors`).
+      #
       # @example
       #   # bad
       #   class Person < Struct.new(:first_name, :last_name)