Removed this from the 1.9 milestone.
Added this to the 1.10 milestone.
Added Accepted label.

This is due to additional runtime type information being set. I am not sure why this is triggered just by using an enum.

Set owner to @karlklose.
Removed this from the 1.10 milestone.
Added this to the 1.9 milestone.

Added Started label.

The current implementation of enums uses a factory constructor which may instantiate a Map implementation taht uses the default validKey implementation, and the default implementation checks against the list's type arguments.

Dart2js does not track is-checks depending on the class they appear, so it sets runtime type information on maps.

I am working on changing the implementation of constant maps to avoid this.

Reason for regression fixed in r45983 and r44019. The change in r43869 has been reapplied in r44020 without regression.

Added Fixed label.