* lib/ostruct.rb (OpenStruct#new_ostruct_member): checks if frozen.

[ruby-talk:328195], [ruby-core:22142]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22332 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ostruct/test_ostruct.rb

@@ -34,4 +34,12 @@ class TC_OpenStruct < Test::Unit::TestCase
     foo.bar.foo = foo
     assert_equal('#<OpenStruct bar=#<OpenStruct foo=#<OpenStruct ...>>>', foo.inspect)
   end
+
+  def test_frozen
+    o = OpenStruct.new
+    o.a = 'a'
+    o.freeze
+    assert_raise(TypeError) {o.b = 'b'}
+    assert_not_respond_to(o, :b)
+  end
 end