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-rw-r--r--test/ruby/test_variable.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/test/ruby/test_variable.rb b/test/ruby/test_variable.rb
index a9b1fd50ff..aa301f2bc7 100644
--- a/test/ruby/test_variable.rb
+++ b/test/ruby/test_variable.rb
@@ -135,7 +135,7 @@ class TestVariable < Test::Unit::TestCase
def test_special_constant_ivars
[ true, false, :symbol, "dsym#{rand(9999)}".to_sym, 1, 1.0 ].each do |v|
assert_empty v.instance_variables
- msg = "can't modify frozen #{v.class}"
+ msg = "can't modify frozen #{v.class}: #{v.inspect}"
assert_raise_with_message(FrozenError, msg) do
v.instance_variable_set(:@foo, :bar)