a7ab99dd84
By indexing all sources in a concatenated dill file and then using that index to find the sources and line starts we can fix missing information (leading to crashes when collecting coverage) in for instance circular instances. Change-Id: I454cff57f84f21de72f6486e1cecf15d1389a498 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/96901 Commit-Queue: Jens Johansen <jensj@google.com> Reviewed-by: Vyacheslav Egorov <vegorov@google.com>