53ead360bb
While working on some other changes to flow analysis, I discovered that this particular behaviour wasn't unit tested. Change-Id: Ia9b27672c62177ffed80d4143f33c5b764ac7bbe Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/313242 Commit-Queue: Paul Berry <paulberry@google.com> Reviewed-by: Konstantin Shcheglov <scheglov@google.com>