| Index: test/codegen/expect/language/function_subtype_optional1_test.js | 
| diff --git a/test/codegen/expect/language/function_subtype_optional1_test.js b/test/codegen/expect/language/function_subtype_optional1_test.js | 
| new file mode 100644 | 
| index 0000000000000000000000000000000000000000..7a0b9502abd19ff85716a414d73e6ec54c443cb9 | 
| --- /dev/null | 
| +++ b/test/codegen/expect/language/function_subtype_optional1_test.js | 
| @@ -0,0 +1,106 @@ | 
| +dart_library.library('language/function_subtype_optional1_test', null, /* Imports */[ | 
| +  'dart_sdk', | 
| +  'expect' | 
| +], function load__function_subtype_optional1_test(exports, dart_sdk, expect) { | 
| +  'use strict'; | 
| +  const core = dart_sdk.core; | 
| +  const dart = dart_sdk.dart; | 
| +  const dartx = dart_sdk.dartx; | 
| +  const expect$ = expect.expect; | 
| +  const function_subtype_optional1_test = Object.create(null); | 
| +  let VoidTovoid = () => (VoidTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [])))(); | 
| +  let intTovoid = () => (intTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [core.int])))(); | 
| +  let __Tovoid = () => (__Tovoid = dart.constFn(dart.definiteFunctionType(dart.void, [], [core.int])))(); | 
| +  let __Tovoid$ = () => (__Tovoid$ = dart.constFn(dart.definiteFunctionType(dart.void, [], [core.Object])))(); | 
| +  let int__Tovoid = () => (int__Tovoid = dart.constFn(dart.definiteFunctionType(dart.void, [core.int], [core.int])))(); | 
| +  let int__Tovoid$ = () => (int__Tovoid$ = dart.constFn(dart.definiteFunctionType(dart.void, [core.int], [core.int, core.int])))(); | 
| +  let doubleTovoid = () => (doubleTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [core.double])))(); | 
| +  let __Tovoid$0 = () => (__Tovoid$0 = dart.constFn(dart.definiteFunctionType(dart.void, [], [core.int, core.int])))(); | 
| +  let __Tovoid$1 = () => (__Tovoid$1 = dart.constFn(dart.definiteFunctionType(dart.void, [], [core.int, core.int, core.int])))(); | 
| +  let __Tovoid$2 = () => (__Tovoid$2 = dart.constFn(dart.definiteFunctionType(dart.void, [], [core.Object, core.int])))(); | 
| +  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))(); | 
| +  function_subtype_optional1_test.void_ = function() { | 
| +  }; | 
| +  dart.fn(function_subtype_optional1_test.void_, VoidTovoid()); | 
| +  function_subtype_optional1_test.void__int = function(i) { | 
| +  }; | 
| +  dart.fn(function_subtype_optional1_test.void__int, intTovoid()); | 
| +  function_subtype_optional1_test.void___int = function(i) { | 
| +    if (i === void 0) i = null; | 
| +  }; | 
| +  dart.fn(function_subtype_optional1_test.void___int, __Tovoid()); | 
| +  function_subtype_optional1_test.void___int2 = function(i) { | 
| +    if (i === void 0) i = null; | 
| +  }; | 
| +  dart.fn(function_subtype_optional1_test.void___int2, __Tovoid()); | 
| +  function_subtype_optional1_test.void___Object = function(o) { | 
| +    if (o === void 0) o = null; | 
| +  }; | 
| +  dart.fn(function_subtype_optional1_test.void___Object, __Tovoid$()); | 
| +  function_subtype_optional1_test.void__int__int = function(i1, i2) { | 
| +    if (i2 === void 0) i2 = null; | 
| +  }; | 
| +  dart.fn(function_subtype_optional1_test.void__int__int, int__Tovoid()); | 
| +  function_subtype_optional1_test.void__int__int2 = function(i1, i2) { | 
| +    if (i2 === void 0) i2 = null; | 
| +  }; | 
| +  dart.fn(function_subtype_optional1_test.void__int__int2, int__Tovoid()); | 
| +  function_subtype_optional1_test.void__int__int_int = function(i1, i2, i3) { | 
| +    if (i2 === void 0) i2 = null; | 
| +    if (i3 === void 0) i3 = null; | 
| +  }; | 
| +  dart.fn(function_subtype_optional1_test.void__int__int_int, int__Tovoid$()); | 
| +  function_subtype_optional1_test.void___double = function(d) { | 
| +  }; | 
| +  dart.fn(function_subtype_optional1_test.void___double, doubleTovoid()); | 
| +  function_subtype_optional1_test.void___int_int = function(i1, i2) { | 
| +    if (i1 === void 0) i1 = null; | 
| +    if (i2 === void 0) i2 = null; | 
| +  }; | 
| +  dart.fn(function_subtype_optional1_test.void___int_int, __Tovoid$0()); | 
| +  function_subtype_optional1_test.void___int_int_int = function(i1, i2, i3) { | 
| +    if (i1 === void 0) i1 = null; | 
| +    if (i2 === void 0) i2 = null; | 
| +    if (i3 === void 0) i3 = null; | 
| +  }; | 
| +  dart.fn(function_subtype_optional1_test.void___int_int_int, __Tovoid$1()); | 
| +  function_subtype_optional1_test.void___Object_int = function(o, i) { | 
| +    if (o === void 0) o = null; | 
| +    if (i === void 0) i = null; | 
| +  }; | 
| +  dart.fn(function_subtype_optional1_test.void___Object_int, __Tovoid$2()); | 
| +  function_subtype_optional1_test.t_void_ = dart.typedef('t_void_', () => dart.functionType(dart.void, [])); | 
| +  function_subtype_optional1_test.t_void__int = dart.typedef('t_void__int', () => dart.functionType(dart.void, [core.int])); | 
| +  function_subtype_optional1_test.t_void___int = dart.typedef('t_void___int', () => dart.functionType(dart.void, [], [core.int])); | 
| +  function_subtype_optional1_test.t_void___int2 = dart.typedef('t_void___int2', () => dart.functionType(dart.void, [], [core.int])); | 
| +  function_subtype_optional1_test.t_void___Object = dart.typedef('t_void___Object', () => dart.functionType(dart.void, [], [core.Object])); | 
| +  function_subtype_optional1_test.t_void__int__int = dart.typedef('t_void__int__int', () => dart.functionType(dart.void, [core.int], [core.int])); | 
| +  function_subtype_optional1_test.t_void__int__int2 = dart.typedef('t_void__int__int2', () => dart.functionType(dart.void, [core.int], [core.int])); | 
| +  function_subtype_optional1_test.t_void__int__int_int = dart.typedef('t_void__int__int_int', () => dart.functionType(dart.void, [core.int], [core.int, core.int])); | 
| +  function_subtype_optional1_test.t_void___double = dart.typedef('t_void___double', () => dart.functionType(dart.void, [core.double])); | 
| +  function_subtype_optional1_test.t_void___int_int = dart.typedef('t_void___int_int', () => dart.functionType(dart.void, [], [core.int, core.int])); | 
| +  function_subtype_optional1_test.t_void___int_int_int = dart.typedef('t_void___int_int_int', () => dart.functionType(dart.void, [], [core.int, core.int, core.int])); | 
| +  function_subtype_optional1_test.t_void___Object_int = dart.typedef('t_void___Object_int', () => dart.functionType(dart.void, [], [core.Object, core.int])); | 
| +  function_subtype_optional1_test.main = function() { | 
| +    expect$.Expect.isTrue(function_subtype_optional1_test.t_void_.is(function_subtype_optional1_test.void___int)); | 
| +    expect$.Expect.isTrue(function_subtype_optional1_test.t_void__int.is(function_subtype_optional1_test.void___int)); | 
| +    expect$.Expect.isFalse(function_subtype_optional1_test.t_void___int.is(function_subtype_optional1_test.void__int)); | 
| +    expect$.Expect.isTrue(function_subtype_optional1_test.t_void___int2.is(function_subtype_optional1_test.void___int)); | 
| +    expect$.Expect.isTrue(function_subtype_optional1_test.t_void___int.is(function_subtype_optional1_test.void___Object)); | 
| +    expect$.Expect.isTrue(function_subtype_optional1_test.t_void___Object.is(function_subtype_optional1_test.void___int)); | 
| +    expect$.Expect.isTrue(function_subtype_optional1_test.t_void__int.is(function_subtype_optional1_test.void__int__int)); | 
| +    expect$.Expect.isTrue(function_subtype_optional1_test.t_void__int__int2.is(function_subtype_optional1_test.void__int__int)); | 
| +    expect$.Expect.isFalse(function_subtype_optional1_test.t_void___int.is(function_subtype_optional1_test.void__int)); | 
| +    expect$.Expect.isTrue(function_subtype_optional1_test.t_void__int.is(function_subtype_optional1_test.void___int_int)); | 
| +    expect$.Expect.isTrue(function_subtype_optional1_test.t_void__int__int.is(function_subtype_optional1_test.void___int_int)); | 
| +    expect$.Expect.isFalse(function_subtype_optional1_test.t_void__int__int_int.is(function_subtype_optional1_test.void___int_int)); | 
| +    expect$.Expect.isTrue(function_subtype_optional1_test.t_void__int__int_int.is(function_subtype_optional1_test.void___int_int_int)); | 
| +    expect$.Expect.isFalse(function_subtype_optional1_test.t_void___double.is(function_subtype_optional1_test.void___int)); | 
| +    expect$.Expect.isFalse(function_subtype_optional1_test.t_void___int_int.is(function_subtype_optional1_test.void___int)); | 
| +    expect$.Expect.isTrue(function_subtype_optional1_test.t_void___int.is(function_subtype_optional1_test.void___int_int)); | 
| +    expect$.Expect.isTrue(function_subtype_optional1_test.t_void___int.is(function_subtype_optional1_test.void___Object_int)); | 
| +  }; | 
| +  dart.fn(function_subtype_optional1_test.main, VoidTodynamic()); | 
| +  // Exports: | 
| +  exports.function_subtype_optional1_test = function_subtype_optional1_test; | 
| +}); | 
|  |