1 files changed, 6 insertions, 3 deletions
diff --git a/deps/v8/src/zone/zone.cc b/deps/v8/src/zone/zone.cc
index 8dd96dc1cd..d2dd9ce068 100644
--- a/deps/v8/src/zone/zone.cc
+++ b/deps/v8/src/zone/zone.cc
@@ -49,7 +49,8 @@ Zone::Zone(AccountingAllocator* allocator, const char* name)
       limit_(0),
       allocator_(allocator),
       segment_head_(nullptr),
-      name_(name) {
+      name_(name),
+      sealed_(false) {
   allocator_->ZoneCreation(this);
 }
 
@@ -62,6 +63,8 @@ Zone::~Zone() {
 }
 
 void* Zone::New(size_t size) {
+  CHECK(!sealed_);
+
   // Round up the requested size to fit the alignment.
   size = RoundUp(size, kAlignmentInBytes);
 
@@ -111,9 +114,9 @@ void Zone::DeleteAll() {
 // of the segment chain. Returns the new segment.
 Segment* Zone::NewSegment(size_t requested_size) {
   Segment* result = allocator_->GetSegment(requested_size);
-  DCHECK_GE(result->size(), requested_size);
-  segment_bytes_allocated_ += result->size();
   if (result != nullptr) {
+    DCHECK_GE(result->size(), requested_size);
+    segment_bytes_allocated_ += result->size();
     result->set_zone(this);
     result->set_next(segment_head_);
     segment_head_ = result;