Support runtime check of function types.

tests/language/function_subtype_inline0_test.dart

Index: tests/language/function_subtype_inline0_test.dart
diff --git a/tests/language/function_subtype_inline0_test.dart b/tests/language/function_subtype_inline0_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..40b49ef6949b37219a9907869ff36086fb79108f
--- /dev/null
+++ b/tests/language/function_subtype_inline0_test.dart
@@ -0,0 +1,41 @@
+// Copyright (c) 2013, 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.
+// Dart test program for constructors and initializers.
+
+// Check function subtyping for generic bound closures.
+
+import 'package:expect/expect.dart';
+
+typedef void Foo(bool a, [String b]);
+typedef void Bar(bool a, [String b]);
+typedef void Baz(bool a, {String b});
+typedef int Boz(bool a);
+
+class C<T> {
+  void test(String nameOfT, bool expectedResult) {
+    Expect.equals(expectedResult, (T a, [String b]) {} is Foo,
+        '($nameOfT,[String])->void is Foo');
+    Expect.equals(expectedResult, (T a, [String b]) {} is Bar,
+        '($nameOfT,[String])->void is Bar');
+    Expect.isFalse((T a, [String b]) {} is Baz,
+        '($nameOfT,[String])->void is Baz');
+    Expect.equals(expectedResult, (T a, [String b]) {} is Boz,
+        '($nameOfT,[String])->void is Boz');
+
+    Expect.isFalse((T a, {String b}) {} is Foo,
+        '($nameOfT,{b:String})->void is Foo');
+    Expect.isFalse((T a, {String b}) {} is Bar,
+        '($nameOfT,{b:String})->void is Bar');
+    Expect.equals(expectedResult, (T a, {String b}) {} is Baz,
+        '($nameOfT,{b:String})->void is Baz');
+    Expect.equals(expectedResult, (T a, {String b}) {} is Boz,
+        '($nameOfT,{b:String})->void is Boz');
+  }
+}
+
+main() {
+  new C<bool>().test('bool', true);
+  new C<int>().test('int', false);
+  new C().test('dynamic', true);
+}