Disable canonical verifier for precompiled.

runtime/vm/isolate.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 "vm/isolate.h"
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 #include "platform/assert.h"
 #include "platform/text_buffer.h"
@@ skipping 1476 matching lines @@
   // running the shutdown callback.
   isolate->WaitForOutstandingSpawns();
   {
     // Print the error if there is one.  This may execute dart code to
     // print the exception object, so we need to use a StartIsolateScope.
     StartIsolateScope start_scope(isolate);
     Thread* thread = Thread::Current();
     ASSERT(thread->isolate() == isolate);
     StackZone zone(thread);
     HandleScope handle_scope(thread);
-#if defined(DEBUG)
+    // TODO(27003): Enable for precompiled.
+#if defined(DEBUG) && !defined(DART_PRECOMPILED_RUNTIME)
     if (!isolate->HasAttemptedReload()) {
       isolate->heap()->CollectAllGarbage();
       VerifyCanonicalVisitor check_canonical(thread);
       isolate->heap()->IterateObjects(&check_canonical);
     }
 #endif  // DEBUG
     const Error& error = Error::Handle(thread->sticky_error());
     if (!error.IsNull() && !error.IsUnwindError()) {
       OS::PrintErr("in ShutdownIsolate: %s\n", error.ToErrorCString());
     }
@@ skipping 1377 matching lines @@
 void IsolateSpawnState::DecrementSpawnCount() {
   ASSERT(spawn_count_monitor_ != NULL);
   ASSERT(spawn_count_ != NULL);
   MonitorLocker ml(spawn_count_monitor_);
   ASSERT(*spawn_count_ > 0);
   *spawn_count_ = *spawn_count_ - 1;
   ml.Notify();
 }
 
 }  // namespace dart