// 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. /// Fails because this.x parameter is used in a function. class Foo { var x; foo(this.x) {} // ^^^^ // [analyzer] SYNTACTIC_ERROR.FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR // ^^^^^^ // [analyzer] COMPILE_TIME_ERROR.FIELD_INITIALIZER_OUTSIDE_CONSTRUCTOR // [cfe] Field formal parameters can only be used in a constructor. } main() { Foo().foo(2); }