[flang-commits] [flang] [Flang] Fix crash with parametrized derived types usage (PR #150289)

[Tom Eccles via flang-commits]

https://github.com/tblah approved this pull request.

I'm not expert on PDTs but in the absence of any other reviewer, adding a TODO message seems reasonable to me.

Nit: please could you add a lit test for this TODO message.

https://github.com/llvm/llvm-project/pull/150289