| // Copyright (c) 2019, 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. |
| |
| // SharedOptions=--enable-experiment=non-nullable |
| |
| // Test that `x ?? y` results in type LUB(x!, y) |
| void main() { |
| f1(null, 2); |
| } |
| |
| void f1( |
| int? nullableInt, |
| int nonNullInt, |
| ) { |
| (nullableInt ?? nonNullInt) + 1; //# 00: ok |
| (nullableInt ?? nullableInt) + 1; //# 01: compile-time error |
| (nonNullInt ?? nullableInt) + 1; //# 02: compile-time error |
| (nonNullInt ?? nonNullInt) + 1; //# 03: ok |
| } |
| |
| // TODO(mfairhurst) add cases with type parameter types |
