parse.y: fix internal IDs conflict

* parse.y (f_kwrest, new_args_tail_gen): unnamed rest keyword and
  keywords bits arguments should be unique.  since internal IDs
  depend on the local variable index in the current scope, new ID
  should be made before popping those vtables.
  [ruby-core:67157] [Bug #10659]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49041 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 20 insertions, 0 deletions

diff --git a/test/ruby/test_keyword.rb b/test/ruby/test_keyword.rb
index d24cd5b0fc..82d6407fe3 100644
--- a/test/ruby/test_keyword.rb
+++ b/test/ruby/test_keyword.rb
@@ -539,4 +539,24 @@ class TestKeywordArguments < Test::Unit::TestCase
       o.foo {raise "unreachable"}
     }
   end
+
+  def test_super_with_anon_restkeywords
+    bug10659 = '[ruby-core:67157] [Bug #10659]'
+
+    foo = Class.new do
+      def foo(**h)
+        h
+      end
+    end
+
+    class << (obj = foo.new)
+      def foo(bar: "bar", **)
+        super
+      end
+    end
+
+    assert_nothing_raised(TypeError, bug10659) {
+      assert_equal({:bar => "bar"}, obj.foo, bug10659)
+    }
+  end
 end