Index: sdk/lib/_internal/compiler/implementation/types/union_type_mask.dart |
diff --git a/sdk/lib/_internal/compiler/implementation/types/union_type_mask.dart b/sdk/lib/_internal/compiler/implementation/types/union_type_mask.dart |
index e782f105498785bfa41d310a4baeb30483911b55..f18e96c0564636177f0800634d3ca404dedcae32 100644 |
--- a/sdk/lib/_internal/compiler/implementation/types/union_type_mask.dart |
+++ b/sdk/lib/_internal/compiler/implementation/types/union_type_mask.dart |
@@ -37,7 +37,6 @@ class UnionTypeMask implements TypeMask { |
continue; |
} else { |
FlatTypeMask flatMask = mask; |
- assert(flatMask.base == null || flatMask.base != compiler.dynamicClass); |
int inListIndex = -1; |
bool covered = false; |