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-rw-r--r--test/-ext-/test_bug-3571.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/-ext-/test_bug-3571.rb b/test/-ext-/test_bug-3571.rb
index d7c26d1ff0..dc9c92bd23 100644
--- a/test/-ext-/test_bug-3571.rb
+++ b/test/-ext-/test_bug-3571.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
require 'test/unit'
class Test_BUG_3571 < Test::Unit::TestCase