- Removed the kWatchedBit and the associated weak property handling

runtime/vm/snapshot.cc

 // Copyright (c) 2012, 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/snapshot.h"
 
 #include "platform/assert.h"
 #include "vm/bootstrap.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart.h"
@@ skipping 124 matching lines @@
 
 
 // TODO(5411462): Temporary setup of snapshot for testing purposes,
 // the actual creation of a snapshot maybe done differently.
 const Snapshot* Snapshot::SetupFromBuffer(const void* raw_memory) {
   ASSERT(raw_memory != NULL);
   ASSERT(kHeaderSize == sizeof(Snapshot));
   ASSERT(kLengthIndex == length_offset());
   ASSERT((kSnapshotFlagIndex * sizeof(int64_t)) == kind_offset());
   ASSERT((kHeapObjectTag & kInlined));
-  // The kWatchedBit and kMarkBit are only set during GC operations. This
-  // allows the two low bits in the header to be used for snapshotting.
-  ASSERT(kObjectId ==
-         ((1 << RawObject::kWatchedBit) | (1 << RawObject::kMarkBit)));
-  ASSERT((kObjectAlignmentMask & kObjectId) == kObjectId);
   const Snapshot* snapshot = reinterpret_cast<const Snapshot*>(raw_memory);
   // If the raw length is negative or greater than what the local machine can
   // handle, then signal an error.
   int64_t snapshot_length = ReadUnaligned(&snapshot->unaligned_length_);
   if ((snapshot_length < 0) || (snapshot_length > kIntptrMax)) {
     return NULL;
   }
   return snapshot;
 }
 
@@ skipping 2619 matching lines @@
   if (setjmp(*jump.Set()) == 0) {
     NoSafepointScope no_safepoint;
     WriteObject(obj.raw());
   } else {
     ThrowException(exception_type(), exception_msg());
   }
 }
 
 
 }  // namespace dart