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-rw-r--r--test/ruby/test_shapes.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/test/ruby/test_shapes.rb b/test/ruby/test_shapes.rb
index bbea03344e..9b02504384 100644
--- a/test/ruby/test_shapes.rb
+++ b/test/ruby/test_shapes.rb
@@ -1006,7 +1006,7 @@ class TestShapes < Test::Unit::TestCase
end
def test_freezing_and_cloning_string
- str = "str".freeze
+ str = ("str" + "str").freeze
str2 = str.clone(freeze: true)
assert_predicate(str2, :frozen?)
assert_shape_equal(RubyVM::Shape.of(str), RubyVM::Shape.of(str2))