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-rw-r--r--test/fiddle/test_c_union_entity.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/fiddle/test_c_union_entity.rb b/test/fiddle/test_c_union_entity.rb
index 165c4ecacb..3c4d538ff1 100644
--- a/test/fiddle/test_c_union_entity.rb
+++ b/test/fiddle/test_c_union_entity.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
begin
require_relative 'helper'
require 'fiddle/struct'