1 files changed, 8 insertions, 0 deletions
diff --git a/spec/ruby/core/string/scan_spec.rb b/spec/ruby/core/string/scan_spec.rb
index 024e97022a..5f86dbbecc 100644
--- a/spec/ruby/core/string/scan_spec.rb
+++ b/spec/ruby/core/string/scan_spec.rb
@@ -198,4 +198,12 @@ describe "String#scan with pattern and block" do
       third.should == 'c';
     end
   end
+
+  ruby_version_is '3.0' do
+    it "yields String instances for subclasses" do
+      a = []
+      StringSpecs::MyString.new("abc").scan(/./) { |s| a << s.class }
+      a.should == [String, String, String]
+    end
+  end
 end