[flang-commits] [flang] [flang][OpenMP] Don't abort when default is used on an invalid directive (PR #107586)

[Tom Eccles via flang-commits]

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

Looks good.

I see this now hits a semantic error instead: "DEFAULT clause is not allowed on the DO directive". There doesn't seem to be a unit test for this currently. Please could you add one so we can verify that it doesn't crash.

https://github.com/llvm/llvm-project/pull/107586