Index: pkg/compiler/lib/src/helpers/debug_collection.dart |
diff --git a/pkg/compiler/lib/src/helpers/debug_collection.dart b/pkg/compiler/lib/src/helpers/debug_collection.dart |
index 751b8c803b4d6d23aafab8807b92be5b60657716..b20bf0c649b8dce79f0ff2e7f7a2b24cac594216 100644 |
--- a/pkg/compiler/lib/src/helpers/debug_collection.dart |
+++ b/pkg/compiler/lib/src/helpers/debug_collection.dart |
@@ -261,7 +261,7 @@ class DebugSet<E> extends DebugIterable<E> implements Set<E> { |
Set<E> union(Set<E> other) => set.union(other); |
- Set<E> difference(Set<E> other) => set.difference(other); |
+ Set<E> difference(Set<Object> other) => set.difference(other); |
void clear() => set.clear(); |