Disable code flushing for native SharedFunctionInfo.

src/objects-visiting-inl.h

Index: src/objects-visiting-inl.h
diff --git a/src/objects-visiting-inl.h b/src/objects-visiting-inl.h
index 6a64cbf802af10184262301df3adcaf3c6a963ac..add247ea45cda0e3f7c97de7e8b24f9a8f632106 100644
--- a/src/objects-visiting-inl.h
+++ b/src/objects-visiting-inl.h
@@ -571,6 +571,12 @@ bool StaticMarkingVisitor<StaticVisitor>::IsFlushable(
     return false;
   }
 
+  // If this is a native function we do not flush the code because %SetCode
+  // breaks the one-to-one relation between SharedFunctionInfo and Code.
+  if (shared_info->native()) {
+    return false;
+  }
+
   if (FLAG_age_code) {
     return shared_info->code()->IsOld();
   } else {