llvm-project

c0ccfd02 - [flang] Reorder messages wrt line number before diff(actual, expect) (#186812)

[flang] Reorder messages wrt line number before diff(actual, expect) (#186812) When messages are attached together, the source locations to which they refer are not necessarily monotonically increasing. For example ``` error: foo.f90:10: There is a problem here # line 10 because: foo.f90:12: This thing is invalid # line 12 (attached) error: foo.f90:11: There is another problem here # line 11 ``` There is no way to represent that in the source file via ERROR annotations, so before running unified_diff "canonicalize" the list of messages into an order that corresponds to the line numbers. --------- Co-authored-by: Michael Kruse <llvm-project@meinersbur.de>