parse.y: remove duplicated names

* parse.y (local_tbl_gen): remove local variables duplicated with
  arguments.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/test/ruby/test_variable.rb b/test/ruby/test_variable.rb
index ab4d44938a..89f1d58348 100644
--- a/test/ruby/test_variable.rb
+++ b/test/ruby/test_variable.rb
@@ -83,6 +83,12 @@ class TestVariable < Test::Unit::TestCase
     end.call
   end
 
+  def test_shadowing_local_variables
+    bug9486 = '[ruby-core:60501] [Bug #9486]'
+    x = tap {|x| break local_variables}
+    assert_equal([:x, :bug9486, :x], x)
+  end
+
   def local_variables_of(bind)
     this_should_not_be_in_bind = 2
     bind.local_variables