WIP: prototype ffi support (from 2084663004)

src/snapshot/code-serializer.cc

Index: src/snapshot/code-serializer.cc
diff --git a/src/snapshot/code-serializer.cc b/src/snapshot/code-serializer.cc
index 511f1117521b257fe4ec02c378d13d1e62c478ec..af9333c4e4caab1230de2e44ab6bcf481e6b4c90 100644
--- a/src/snapshot/code-serializer.cc
+++ b/src/snapshot/code-serializer.cc
@@ -94,6 +94,8 @@ void CodeSerializer::SerializeObject(HeapObject* obj, HowToCode how_to_code,
         DCHECK(code_object->has_reloc_info_for_serialization());
         SerializeGeneric(code_object, how_to_code, where_to_point);
         return;
+      case Code::JS_TO_NATIVE_FUNCTION:
+        UNREACHABLE();
       default:
         return SerializeCodeObject(code_object, how_to_code, where_to_point);
     }