@evaniainbrooks Can you apply this PR against the 9.5-dev branch? 9.4 is 3.1.x Ruby and 9.5 will be 3.3. Also if this is new 3.3 behavior you should add a version guard like:

  ruby_version_is "3.2" do
    it "raises a TypeError if passed a Hash with an unknown key" do
      -> { Struct.new(:animal, { name: 'chris' }) }.should raise_error(TypeError)
    end
  end

It also accepts a range so you can do things like ..3.2. At some future point when this becomes our main branch we get our spec changes merged back to ruby/spec so this will save that project some bother of having to add the version guard. At any time if you feel like adding new specs you can also PR directly to ruby/spec but it will still get there from our PRs at some point.

Looks like we have some weird problems on 9.5-dev still but it is relatively new. Thanks for the fix. I marked this item as finished in #8029.