1. Fix the type arguments recursion problem that gets introduced when canonicalization of type argu…

runtime/vm/dart_api_impl.cc

 // 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.
 
 #include "include/dart_api.h"
 #include "include/dart_mirrors_api.h"
 #include "include/dart_native_api.h"
 
 #include "platform/assert.h"
 #include "vm/class_finalizer.h"
@@ skipping 1550 matching lines @@
   Dart_Handle state = Api::CheckAndFinalizePendingClasses(isolate);
   if (::Dart_IsError(state)) {
     return state;
   }
   Library& lib = Library::Handle(isolate);
   if (library == Dart_Null()) {
     lib ^= isolate->object_store()->root_library();
   } else {
     lib ^= Api::UnwrapHandle(library);
   }
+  isolate->heap()->CollectAllGarbage();
+#if defined(DEBUG)
+  FunctionVisitor check_canonical(isolate);
+  isolate->heap()->IterateObjects(&check_canonical);
+#endif  // #if defined(DEBUG).
   ScriptSnapshotWriter writer(buffer, ApiReallocate);
   writer.WriteScriptSnapshot(lib);
   *size = writer.BytesWritten();
   return Api::Success();
 }
 
 
 DART_EXPORT Dart_Handle Dart_CreateScriptSnapshot(uint8_t** buffer,
                                                   intptr_t* size) {
   return createLibrarySnapshot(Dart_Null(), buffer, size);
@@ skipping 4279 matching lines @@
   ASSERT(stream != NULL);
   TimelineEvent* event = stream->StartEvent();
   if (event != NULL) {
     event->AsyncEnd(label, async_id);
     event->Complete();
   }
   return Api::Success();
 }
 
 }  // namespace dart