Fix crash during GC in gen_snapshot:

runtime/vm/object_store.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/object_store.h"
 
 #include "vm/exceptions.h"
 #include "vm/dart_entry.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 #include "vm/raw_object.h"
 #include "vm/symbols.h"
 #include "vm/visitor.h"
 
 namespace dart {
 
 ObjectStore::ObjectStore()
   : object_class_(Class::null()),
     object_type_(Type::null()),
     null_class_(Class::null()),
     null_type_(Type::null()),
     function_type_(Type::null()),
     function_impl_type_(Type::null()),
     number_type_(Type::null()),
     int_type_(Type::null()),
     integer_implementation_class_(Class::null()),
     smi_class_(Class::null()),
+    smi_type_(Type::null()),
     mint_class_(Class::null()),
+    mint_type_(Type::null()),
+    bigint_class_(Class::null()),
     double_class_(Class::null()),
+    double_type_(Type::null()),
     float32x4_type_(Type::null()),
     int32x4_type_(Type::null()),
     float64x2_type_(Type::null()),
     string_type_(Type::null()),
     one_byte_string_class_(Class::null()),
     two_byte_string_class_(Class::null()),
     external_one_byte_string_class_(Class::null()),
     external_two_byte_string_class_(Class::null()),
     bool_type_(Type::null()),
     bool_class_(Class::null()),
     array_class_(Class::null()),
     array_type_(Type::null()),
     immutable_array_class_(Class::null()),
     growable_object_array_class_(Class::null()),
     linked_hash_map_class_(Class::null()),
     float32x4_class_(Class::null()),
     int32x4_class_(Class::null()),
     float64x2_class_(Class::null()),
     error_class_(Class::null()),
     weak_property_class_(Class::null()),
     symbol_table_(Array::null()),
     canonical_type_arguments_(Array::null()),
     async_library_(Library::null()),
     builtin_library_(Library::null()),
     core_library_(Library::null()),
+    collection_library_(Library::null()),
+    convert_library_(Library::null()),
+    internal_library_(Library::null()),
     isolate_library_(Library::null()),
     math_library_(Library::null()),
     mirrors_library_(Library::null()),
     native_wrappers_library_(Library::null()),
     root_library_(Library::null()),
     typed_data_library_(Library::null()),
+    profiler_library_(Library::null()),
     libraries_(GrowableObjectArray::null()),
     pending_classes_(GrowableObjectArray::null()),
     pending_functions_(GrowableObjectArray::null()),
+    pending_deferred_loads_(GrowableObjectArray::null()),
     resume_capabilities_(GrowableObjectArray::null()),
     sticky_error_(Error::null()),
     unhandled_exception_handler_(String::null()),
     empty_context_(Context::null()),
     stack_overflow_(Instance::null()),
     out_of_memory_(Instance::null()),
+    preallocated_unhandled_exception_(UnhandledException::null()),
     preallocated_stack_trace_(Stacktrace::null()),
     lookup_port_handler_(Function::null()),
     empty_uint32_array_(TypedData::null()),
     handle_message_function_(Function::null()),
     library_load_error_table_(Array::null()) {
+  for (RawObject** current = from(); current <= to(); current++) {
+    ASSERT(*current == Object::null());
+  }
 }
 
 
 ObjectStore::~ObjectStore() {
 }
 
 
 void ObjectStore::VisitObjectPointers(ObjectPointerVisitor* visitor) {
   ASSERT(visitor != NULL);
   visitor->VisitPointers(from(), to());
@@ skipping 62 matching lines @@
       Stacktrace::Handle(Stacktrace::New(code_array, pc_offset_array));
   // Expansion of inlined functions requires additional memory at run time,
   // avoid it.
   stack_trace.set_expand_inlined(false);
   set_preallocated_stack_trace(stack_trace);
 
   return true;
 }
 
 }  // namespace dart