| // Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file | 
 | // for details. All rights reserved. Use of this source code is governed by a | 
 | // BSD-style license that can be found in the LICENSE file. | 
 |  | 
 | f(Object? objectQuestion) { | 
 |   return {...<int>{}, ...objectQuestion}; | 
 |   //     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
 |   // [analyzer] COMPILE_TIME_ERROR.AMBIGUOUS_SET_OR_MAP_LITERAL_EITHER | 
 |   //                     ^^^^^^^^^^^^^^ | 
 |   // [analyzer] COMPILE_TIME_ERROR.UNCHECKED_USE_OF_NULLABLE_VALUE | 
 |   //                     ^ | 
 |   // [cfe] Unexpected type 'Object?' of a map spread entry.  Expected 'dynamic' or a Map. | 
 | } | 
 |  | 
 | main() {} |