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

runtime/vm/code_generator.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/code_generator.h"
 
 #include "vm/assembler.h"
 #include "vm/ast.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
@@ skipping 621 matching lines @@
 DEFINE_RUNTIME_ENTRY(Throw, 1) {
   const Instance& exception =
       Instance::CheckedHandle(isolate, arguments.ArgAt(0));
   Exceptions::Throw(isolate, exception);
 }
 
 
 DEFINE_RUNTIME_ENTRY(ReThrow, 2) {
   const Instance& exception =
       Instance::CheckedHandle(isolate, arguments.ArgAt(0));
-  const Instance& stacktrace =
-      Instance::CheckedHandle(isolate, arguments.ArgAt(1));
+  const Stacktrace& stacktrace =
+      Stacktrace::CheckedHandle(isolate, arguments.ArgAt(1));
   Exceptions::ReThrow(isolate, exception, stacktrace);
 }
 
 
 // Patches static call in optimized code with the target's entry point.
 // Compiles target if necessary.
 DEFINE_RUNTIME_ENTRY(PatchStaticCall, 0) {
   DartFrameIterator iterator;
   StackFrame* caller_frame = iterator.NextFrame();
   ASSERT(caller_frame != NULL);
@@ skipping 1025 matching lines @@
   const intptr_t elm_size = old_data.ElementSizeInBytes();
   const TypedData& new_data =
       TypedData::Handle(TypedData::New(cid, new_size, Heap::kOld));
   TypedData::Copy(new_data, 0, old_data, 0, old_size * elm_size);
   typed_data_cell.SetAt(0, new_data);
   arguments.SetReturn(new_data);
 }
 
 
 }  // namespace dart