- Zap the allocated object when allocating uninitialized memory in debug.

runtime/vm/object.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/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 3975 matching lines @@
   ASSERT(!IsNull());
   return Smi::Value(raw_ptr()->length_);
 }
 
 
 RawAbstractType* TypeArguments::TypeAt(intptr_t index) const {
   return *TypeAddr(index);
 }
 
 
+void TypeArguments::set_type_at(intptr_t index,
+                                const AbstractType& value) const {
+  StorePointer(TypeAddr(index), value.raw());
+}
+
+
 void TypeArguments::SetTypeAt(intptr_t index, const AbstractType& value) const {
   const AbstractType& type_arg = AbstractType::Handle(TypeAt(index));
   if (type_arg.IsTypeRef()) {
     if (value.raw() != type_arg.raw()) {
       TypeRef::Cast(type_arg).set_type(value);
     }
   } else {
-    StorePointer(TypeAddr(index), value.raw());
+    set_type_at(index, value);
   }
 }
 
 
 bool TypeArguments::IsResolved() const {
   AbstractType& type = AbstractType::Handle();
   const intptr_t num_types = Length();
   for (intptr_t i = 0; i < num_types; i++) {
     type = TypeAt(i);
     if (!type.IsResolved()) {
@@ skipping 185 matching lines @@
 
 
 RawTypeArguments* TypeArguments::InstantiateAndCanonicalizeFrom(
     const TypeArguments& instantiator_type_arguments,
     Error* bound_error) const {
   ASSERT(!IsInstantiated());
   ASSERT(instantiator_type_arguments.IsNull() ||
          instantiator_type_arguments.IsCanonical());
   // Lookup instantiator and, if found, return paired instantiated result.
   Array& prior_instantiations = Array::Handle(instantiations());
-  ASSERT(!prior_instantiations.IsNull());
+  ASSERT(!prior_instantiations.IsNull() && prior_instantiations.IsArray());
   intptr_t length = prior_instantiations.Length();
   intptr_t index = 0;
   while (index < length) {
     if (prior_instantiations.At(index) == instantiator_type_arguments.raw()) {
       return TypeArguments::RawCast(prior_instantiations.At(index + 1));
     }
     if (prior_instantiations.At(index) == Smi::New(StubCode::kNoInstantiator)) {
       break;
     }
     index += 2;
@@ skipping 13116 matching lines @@
   return "_MirrorReference";
 }
 
 
 void MirrorReference::PrintToJSONStream(JSONStream* stream, bool ref) const {
   Instance::PrintToJSONStream(stream, ref);
 }
 
 
 }  // namespace dart