[flang-commits] [flang] [flang]Add new intrinsic function backtrace and complete the TODO of abort (PR #117603)

[Tom Eccles via flang-commits]

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

LGTM. If nobody objects I can merge this tomorrow.

Thanks for all of the quick responses to feedback.

https://github.com/llvm/llvm-project/pull/117603