// Copyright (c) 2017, 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.

/*@testedFeatures=inference*/
library test;

test1(List<int> o) {
  var /*@type=Iterable<int>*/ y =
      o. /*@typeArgs=int*/ /*@target=Iterable.map*/ map(
          /*@returnType=int*/ (/*@type=int*/ x) {
    return x /*@target=num.+*/ + 1;
  });
  Iterable<int> z = y;
}

main() {}
