blob: 78757edf14e16cfefc1a85d89414c0c791398002 [file] [log] [blame]
// 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.
/// @assertion It is a compile-time error if an extension application occurs in a
/// place where it is not the target expression of a simple or composite member
/// invocation. That is, the only valid use of an extension application is to
/// invoke members on it. This is similar to how prefix names can also only be
/// used as member invocation targets. The main difference is that extensions can
/// also declare operators.
/// @description Check that it is no compile-time error if null-aware member
/// access like E(o)?[v] is used for explicit extension invocation
/// @issue 39326
/// @author
/// @issue 43217
import "../../Utils/expect.dart";
class C {
extension Ext on C {
int operator [](int index) => index;
main() {
C c = C();
Expect.equals(42, Ext(c)?[42]);
// ^^
// ^
// [cfe] Operand of null-aware operation '?.' has type 'C' which excludes null.