Fix for issue 22778, stored the function object in the forward reference table instead of the impli…

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_entry.h"
@@ skipping 225 matching lines @@
   return cls.raw();
 }
 
 
 RawObject* SnapshotReader::ReadStaticImplicitClosure(intptr_t object_id,
                                                      intptr_t class_header) {
   ASSERT(kind_ == Snapshot::kMessage);
 
   // First create a function object and associate it with the specified
   // 'object_id'.
-  Function& func = Function::ZoneHandle(isolate(), Function::null());
-  AddBackRef(object_id, &func, kIsDeserialized);
+  Function& func = Function::Handle(isolate(), Function::null());
+  Instance& obj = Instance::ZoneHandle(isolate(), Instance::null());
+  AddBackRef(object_id, &obj, kIsDeserialized);
 
   // Read the library/class/function information and lookup the function.
   str_ ^= ReadObjectImpl();
   library_ = Library::LookupLibrary(str_);
   if (library_.IsNull() || !library_.Loaded()) {
     SetReadException("Invalid Library object found in message.");
   }
   str_ ^= ReadObjectImpl();
   if (str_.Equals(Symbols::TopLevel())) {
     str_ ^= ReadObjectImpl();
     func = library_.LookupFunctionAllowPrivate(str_);
   } else {
     cls_ = library_.LookupClassAllowPrivate(str_);
     if (cls_.IsNull()) {
       OS::Print("Name of class not found %s\n", str_.ToCString());
       SetReadException("Invalid Class object found in message.");
     }
     cls_.EnsureIsFinalized(isolate());
     str_ ^= ReadObjectImpl();
     func = cls_.LookupFunctionAllowPrivate(str_);
   }
   if (func.IsNull()) {
     SetReadException("Invalid function object found in message.");
   }
   func = func.ImplicitClosureFunction();
   ASSERT(!func.IsNull());
 
   // Return the associated implicit static closure.
-  return func.ImplicitStaticClosure();
+  obj = func.ImplicitStaticClosure();
+  return obj.raw();
 }
 
 
 RawObject* SnapshotReader::ReadObjectImpl() {
   int64_t value = Read<int64_t>();
   if ((value & kSmiTagMask) == kSmiTag) {
     return NewInteger(value);
   }
   ASSERT((value <= kIntptrMax) && (value >= kIntptrMin));
   return ReadObjectImpl(static_cast<intptr_t>(value));
@@ skipping 1661 matching lines @@
     NoGCScope no_gc;
     WriteObject(obj.raw());
     UnmarkAll();
   } else {
     ThrowException(exception_type(), exception_msg());
   }
 }
 
 
 }  // namespace dart