- Make sure to fail early if an non-stacktrace is passed into the VM

runtime/vm/object.h

 // 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.
 
 #ifndef VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 4558 matching lines @@
 };
 
 
 class UnhandledException : public Error {
  public:
   RawInstance* exception() const { return raw_ptr()->exception_; }
   static intptr_t exception_offset() {
     return OFFSET_OF(RawUnhandledException, exception_);
   }
 
-  RawInstance* stacktrace() const { return raw_ptr()->stacktrace_; }
+  RawStacktrace* stacktrace() const { return raw_ptr()->stacktrace_; }
   static intptr_t stacktrace_offset() {
     return OFFSET_OF(RawUnhandledException, stacktrace_);
   }
 
   static intptr_t InstanceSize() {
     return RoundedAllocationSize(sizeof(RawUnhandledException));
   }
 
   static RawUnhandledException* New(const Instance& exception,
-                                    const Instance& stacktrace,
+                                    const Stacktrace& stacktrace,
                                     Heap::Space space = Heap::kNew);
 
   virtual const char* ToErrorCString() const;
 
  private:
   static RawUnhandledException* New(Heap::Space space = Heap::kNew);
 
   void set_exception(const Instance& exception) const;
-  void set_stacktrace(const Instance& stacktrace) const;
+  void set_stacktrace(const Stacktrace& stacktrace) const;
 
   FINAL_HEAP_OBJECT_IMPLEMENTATION(UnhandledException, Error);
   friend class Class;
   friend class ObjectStore;
 };
 
 
 class UnwindError : public Error {
  public:
   RawString* message() const { return raw_ptr()->message_; }
@@ skipping 3183 matching lines @@
 
 
 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
                                                intptr_t index) {
   return array.At((index * kEntryLength) + kTargetFunctionIndex);
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_