* array.c (rb_ary_dup): make returned array the same class as the original

  array [Bug #7768] [ruby-core:51792]
* test/ruby/test_array.rb (class TestArray): add test

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39004 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 0 deletions

diff --git a/test/ruby/test_array.rb b/test/ruby/test_array.rb
index 3ab0895f8c..c231ecccd1 100644
--- a/test/ruby/test_array.rb
+++ b/test/ruby/test_array.rb
@@ -2283,4 +2283,11 @@ class TestArray < Test::Unit::TestCase
 
     assert_include([4, 7], a.bsearch {|x| (2**100).coerce((1 - x / 4) * (2**100)).first })
   end
+
+  def test_array_uniq_returns_same_class # [ruby-core:51792]
+    klass = Class.new(Array)
+    assert_equal klass, klass.new(2).uniq.class
+    assert_equal klass, klass.new(1).uniq.class
+    assert_equal klass, klass.new(0).uniq.class
+  end
 end