An isolate created with spawn function doesn't necessarily agree with its parent on the library pri…

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 250 matching lines @@
          !IsObjectStoreClassId(SerializedHeaderData::decode(class_header)));
   Class& cls = Class::ZoneHandle(zone(), Class::null());
   AddBackRef(object_id, &cls, kIsDeserialized);
   // Read the library/class information and lookup the class.
   str_ ^= ReadObjectImpl(class_header, kAsInlinedObject, kInvalidPatchIndex, 0);
   library_ = Library::LookupLibrary(thread(), str_);
   if (library_.IsNull() || !library_.Loaded()) {
     SetReadException("Invalid object found in message.");
   }
   str_ ^= ReadObjectImpl(kAsInlinedObject);
-  cls = library_.LookupClass(str_);
+  cls = library_.LookupClassAllowPrivate(str_);
   if (cls.IsNull()) {
     SetReadException("Invalid object found in message.");
   }
   cls.EnsureIsFinalized(thread());
   return cls.raw();
 }
 
 
 RawFunction* SnapshotReader::ReadFunctionId(intptr_t object_id) {
   ASSERT(kind_ == Snapshot::kScript);
@@ skipping 10 matching lines @@
   str_ ^= ReadObjectImpl(func_header, kAsInlinedObject, kInvalidPatchIndex, 0);
   library_ = Library::LookupLibrary(thread(), str_);
   if (library_.IsNull() || !library_.Loaded()) {
     SetReadException("Expected a library name, but found an invalid name.");
   }
   str_ ^= ReadObjectImpl(kAsInlinedObject);
   if (str_.Equals(Symbols::TopLevel(), 0, Symbols::TopLevel().Length())) {
     str_ ^= ReadObjectImpl(kAsInlinedObject);
     func ^= library_.LookupLocalFunction(str_);
   } else {
-    cls_ = library_.LookupClass(str_);
+    cls_ = library_.LookupClassAllowPrivate(str_);
     if (cls_.IsNull()) {
       SetReadException("Expected a class name, but found an invalid name.");
     }
     cls_.EnsureIsFinalized(thread());
     str_ ^= ReadObjectImpl(kAsInlinedObject);
     func ^= cls_.LookupFunctionAllowPrivate(str_);
   }
   if (func.IsNull()) {
     SetReadException("Expected a function name, but found an invalid name.");
   }
@@ skipping 1643 matching lines @@
   if (setjmp(*jump.Set()) == 0) {
     NoSafepointScope no_safepoint;
     WriteObject(obj.raw());
   } else {
     ThrowException(exception_type(), exception_msg());
   }
 }
 
 
 }  // namespace dart