Revert Dart_PropagateError until I can track down the problems in

runtime/vm/object_store.cc

Index: runtime/vm/object_store.cc
===================================================================
--- runtime/vm/object_store.cc	(revision 3821)
+++ runtime/vm/object_store.cc	(working copy)
@@ -6,6 +6,7 @@
 
 #include "vm/exceptions.h"
 #include "vm/isolate.h"
+#include "vm/longjump.h"
 #include "vm/object.h"
 #include "vm/raw_object.h"
 #include "vm/visitor.h"
@@ -79,26 +80,23 @@
   if (preallocate_objects_called_) {
     return true;
   }
+
   Isolate* isolate = Isolate::Current();
   ASSERT(isolate != NULL && isolate->object_store() == this);
-  GrowableArray<const Object*> args;
-  Object& result = Object::Handle();
-  Instance& exception = Instance::Handle();
-
-  result = Exceptions::Create(Exceptions::kStackOverflow, args);
-  if (result.IsError()) {
+  LongJump* base = isolate->long_jump_base();
+  LongJump jump;
+  isolate->set_long_jump_base(&jump);
+  if (setjmp(*jump.Set()) == 0) {
+    GrowableArray<const Object*> args;
+    Instance& exception =Instance::Handle();
+    exception = Exceptions::Create(Exceptions::kStackOverflow, args);
+    set_stack_overflow(exception);
+    exception = Exceptions::Create(Exceptions::kOutOfMemory, args);
+    set_out_of_memory(exception);
+  } else {
     return false;
   }
-  exception ^= result.raw();
-  set_stack_overflow(exception);
-
-  result = Exceptions::Create(Exceptions::kOutOfMemory, args);
-  if (result.IsError()) {
-    return false;
-  }
-  exception ^= result.raw();
-  set_out_of_memory(exception);
-
+  isolate->set_long_jump_base(base);
   preallocate_objects_called_ = true;
   return true;
 }