Destroyed global handles should not be touched. Added extra...

src/global-handles.cc

Index: src/global-handles.cc
===================================================================
--- src/global-handles.cc	(revision 723)
+++ src/global-handles.cc	(working copy)
@@ -96,6 +96,7 @@
   // Make this handle weak.
   void MakeWeak(void* parameter, WeakReferenceCallback callback) {
     LOG(HandleEvent("GlobalHandle::MakeWeak", handle().location()));
+    ASSERT(state_ != DESTROYED);
     if (state_ != WEAK && !IsNearDeath()) {
       GlobalHandles::number_of_weak_handles_++;
       if (object_->IsJSGlobalObject()) {
@@ -109,6 +110,7 @@
 
   void ClearWeakness() {
     LOG(HandleEvent("GlobalHandle::ClearWeakness", handle().location()));
+    ASSERT(state_ != DESTROYED);
     if (state_ == WEAK || IsNearDeath()) {
       GlobalHandles::number_of_weak_handles_--;
       if (object_->IsJSGlobalObject()) {