// 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;

main() {
  var /*@ type=() ->* Null? */ a = /*@ returnType=Null? */ () {};
  var /*@ type=() ->* Null? */ b = /*@ returnType=Null? */ () {
    return;
  };
  var /*@ type=() ->* Null? */ c = /*@ returnType=Null? */ () {
    return null;
  };
  var /*@ type=() ->* int* */ d = /*@ returnType=int* */ () {
    return 0;
  };
  var /*@ type=(bool*) ->* Null? */ e = /*@ returnType=Null? */ (bool b) {
    if (b) {
      return;
    } else {
      return;
    }
  };
  var /*@ type=(bool*) ->* Null? */ f = /*@ returnType=Null? */ (bool b) {
    if (b) {
      return;
    } else {
      return null;
    }
  };
  var /*@ type=(bool*) ->* int* */ g = /*@ returnType=int* */ (bool b) {
    if (b) {
      return;
    } else {
      return 0;
    }
  };
  var /*@ type=(bool*) ->* Null? */ h = /*@ returnType=Null? */ (bool b) {
    if (b) {
      return null;
    } else {
      return;
    }
  };
  var /*@ type=(bool*) ->* Null? */ i = /*@ returnType=Null? */ (bool b) {
    if (b) {
      return null;
    } else {
      return null;
    }
  };
  var /*@ type=(bool*) ->* int* */ j = /*@ returnType=int* */ (bool b) {
    if (b) {
      return null;
    } else {
      return 0;
    }
  };
  var /*@ type=(bool*) ->* int* */ k = /*@ returnType=int* */ (bool b) {
    if (b) {
      return 0;
    } else {
      return;
    }
  };
  var /*@ type=(bool*) ->* int* */ l = /*@ returnType=int* */ (bool b) {
    if (b) {
      return 0;
    } else {
      return null;
    }
  };
  var /*@ type=(bool*) ->* int* */ m = /*@ returnType=int* */ (bool b) {
    if (b) {
      return 0;
    } else {
      return 0;
    }
  };
}