Modify growth policy for table of canonical types in each class.

tests/language/generic_closure_test.dart

Index: tests/language/generic_closure_test.dart
===================================================================
--- tests/language/generic_closure_test.dart	(revision 0)
+++ tests/language/generic_closure_test.dart	(revision 0)
@@ -0,0 +1,62 @@
+// Copyright (c) 2014, 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 that generic closures are properly instantiated.
+
+import 'package:expect/expect.dart';
+
+typedef T F<T>(T x);
+typedef R G<T, R>(T x);
+
+class C<T> {
+  get f => (T x) => 2*x;
+  T g(T x) => 3*x;
+}
+
+main() {
+  var c = new C<int>();
+  var f = c.f;
+  var g = c.g;
+  Expect.equals(42, f(21));
+  Expect.equals(42, g(14));
+  Expect.isTrue(f is Function);
+  Expect.isTrue(g is Function);
+  Expect.isTrue(f is F);
+  Expect.isTrue(g is F);
+  Expect.isTrue(f is F<int>);
+  Expect.isTrue(g is F<int>);
+  Expect.isTrue(f is! F<bool>);
+  Expect.isTrue(g is! F<bool>);
+  Expect.isTrue(f is G<int, int>);
+  Expect.isTrue(g is G<int, int>);
+  Expect.isTrue(f is G<int, bool>);
+  Expect.isTrue(g is! G<int, bool>);
+  Expect.equals("(int) => dynamic", f.runtimeType.toString());
+  Expect.equals("(int) => int", g.runtimeType.toString());
+
+  c = new C<bool>();
+  f = c.f;
+  g = c.g;
+  Expect.isTrue(f is F);
+  Expect.isTrue(g is F);
+  Expect.isTrue(f is! F<int>);
+  Expect.isTrue(g is! F<int>);
+  Expect.isTrue(f is F<bool>);
+  Expect.isTrue(g is F<bool>);
+  Expect.equals("(bool) => dynamic", f.runtimeType.toString());
+  Expect.equals("(bool) => bool", g.runtimeType.toString());
+
+  c = new C();
+  f = c.f;
+  g = c.g;
+  Expect.isTrue(f is F);
+  Expect.isTrue(g is F);
+  Expect.isTrue(f is F<int>);
+  Expect.isTrue(g is F<int>);
+  Expect.isTrue(f is F<bool>);
+  Expect.isTrue(g is F<bool>);
+  Expect.equals("(dynamic) => dynamic", f.runtimeType.toString());
+  Expect.equals("(dynamic) => dynamic", g.runtimeType.toString());
+}