[liveedit]: fail to patch if target is outside of async function on stack

src/debug/liveedit.cc

Index: src/debug/liveedit.cc
diff --git a/src/debug/liveedit.cc b/src/debug/liveedit.cc
index cc21f2dd46b015dd0dff10c3920ab95d97f2bced..b28ae9a41c669711a5155e7ee8575c915997ce53 100644
--- a/src/debug/liveedit.cc
+++ b/src/debug/liveedit.cc
@@ -1627,6 +1627,21 @@ class MultipleFunctionTarget {
     return false;
   }
 
+  void set_status(LiveEdit::FunctionPatchabilityStatus status) {
+    Isolate* isolate = old_shared_array_->GetIsolate();
+    int len = GetArrayLength(old_shared_array_);
+    for (int i = 0; i < len; ++i) {
+      Handle<Object> old_element =
+          JSReceiver::GetElement(isolate, result_, i).ToHandleChecked();
+      if (!old_element->IsSmi() ||
+          Smi::cast(*old_element)->value() ==
+              LiveEdit::FUNCTION_AVAILABLE_FOR_PATCH) {
+        SetElementSloppy(result_, i,
+                         Handle<Smi>(Smi::FromInt(status), isolate));
+      }
+    }
+  }
+
  private:
   Handle<JSArray> old_shared_array_;
   Handle<JSArray> new_shared_array_;
@@ -1704,6 +1719,13 @@ static const char* DropActivationsInActiveThreadImpl(Isolate* isolate,
           // Fail.
           return NULL;
         }
+        if (non_droppable_reason ==
+                LiveEdit::FUNCTION_BLOCKED_UNDER_GENERATOR &&
+            !target_frame_found) {
+          // Fail.
+          target.set_status(non_droppable_reason);
+          return NULL;
+        }
       }
     }
   }