[heap] pause observers during mark-compact

src/heap/spaces.cc

Index: src/heap/spaces.cc
diff --git a/src/heap/spaces.cc b/src/heap/spaces.cc
index 5a1ac65a2c7d4948ea426c7afd9afeafef603ac2..8d5e401953056e999bddd62cce36df5b0e9ed9ce 100644
--- a/src/heap/spaces.cc
+++ b/src/heap/spaces.cc
@@ -1604,10 +1604,11 @@ bool NewSpace::EnsureAllocation(int size_in_bytes,
 
 
 void NewSpace::StartNextInlineAllocationStep() {
-  DCHECK(!inline_allocation_observers_paused_);
-  top_on_previous_step_ =
-      inline_allocation_observers_.length() ? allocation_info_.top() : 0;
-  UpdateInlineAllocationLimit(0);
+  if (!inline_allocation_observers_paused_) {
+    top_on_previous_step_ =
+        inline_allocation_observers_.length() ? allocation_info_.top() : 0;
+    UpdateInlineAllocationLimit(0);
+  }
 }