From 1794cfe12fe61dedebadead542927f9fef4104eb Mon Sep 17 00:00:00 2001
From: Yusuke Endoh <mame@ruby-lang.org>
Date: Fri, 12 Dec 2025 14:44:09 +0900
Subject: Binding#local_variable_defined? raises a NameError for numbered
 params.

[Bug #21776]
---
 test/ruby/test_proc.rb | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

(limited to 'test/ruby')

diff --git a/test/ruby/test_proc.rb b/test/ruby/test_proc.rb
index d6bd8e724e..2eeb7a94eb 100644
--- a/test/ruby/test_proc.rb
+++ b/test/ruby/test_proc.rb
@@ -1659,35 +1659,35 @@ class TestProc < Test::Unit::TestCase
       assert_equal([], binding.local_variables)
       assert_raise(NameError) { binding.local_variable_get(:_9) }
       assert_raise(NameError) { binding.local_variable_set(:_9, 1) }
-      assert_equal(false, binding.local_variable_defined?(:_9))
+      assert_raise(NameError) { binding.local_variable_defined?(:_9) }
       "bar".tap do
         assert_equal([], binding.local_variables)
         assert_raise(NameError) { binding.local_variable_get(:_9) }
         assert_raise(NameError) { binding.local_variable_set(:_9, 1) }
-        assert_equal(false, binding.local_variable_defined?(:_9))
+        assert_raise(NameError) { binding.local_variable_defined?(:_9) }
       end
       assert_equal([], binding.local_variables)
       assert_raise(NameError) { binding.local_variable_get(:_9) }
       assert_raise(NameError) { binding.local_variable_set(:_9, 1) }
-      assert_equal(false, binding.local_variable_defined?(:_9))
+      assert_raise(NameError) { binding.local_variable_defined?(:_9) }
     end
 
     "foo".tap do
       assert_equal([], binding.local_variables)
       assert_raise(NameError) { binding.local_variable_get(:_9) }
       assert_raise(NameError) { binding.local_variable_set(:_9, 1) }
-      assert_equal(false, binding.local_variable_defined?(:_9))
+      assert_raise(NameError) { binding.local_variable_defined?(:_9) }
       "bar".tap do
         _9 and flunk
         assert_equal([], binding.local_variables)
         assert_raise(NameError) { binding.local_variable_get(:_9) }
         assert_raise(NameError) { binding.local_variable_set(:_9, 1) }
-        assert_equal(false, binding.local_variable_defined?(:_9))
+        assert_raise(NameError) { binding.local_variable_defined?(:_9) }
       end
       assert_equal([], binding.local_variables)
       assert_raise(NameError) { binding.local_variable_get(:_9) }
       assert_raise(NameError) { binding.local_variable_set(:_9, 1) }
-      assert_equal(false, binding.local_variable_defined?(:_9))
+      assert_raise(NameError) { binding.local_variable_defined?(:_9) }
     end
   end
 
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