From dd96c47a8162b4456c12b7b96e48e46c559b06b1 Mon Sep 17 00:00:00 2001
From: yangguo <yangguo@chromium.org>
Date: Fri, 12 Jun 2015 02:36:58 -0700
Subject: [PATCH] External snapshot: allow empty snapshot for external
 snapshot.

R=vogelheim@chromium.org

Review URL: https://codereview.chromium.org/1180043003

Cr-Commit-Position: refs/heads/master@{#28989}
---
 src/snapshot/snapshot.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/snapshot/snapshot.h b/src/snapshot/snapshot.h
index 371afef4fc..7f89213f16 100644
--- a/src/snapshot/snapshot.h
+++ b/src/snapshot/snapshot.h
@@ -38,7 +38,8 @@ class Snapshot : public AllStatic {
 
   static bool HaveASnapshotToStartFrom(Isolate* isolate) {
     // Do not use snapshots if the isolate is used to create snapshots.
-    return isolate->snapshot_blob() != NULL;
+    return isolate->snapshot_blob() != NULL &&
+           isolate->snapshot_blob()->data != NULL;
   }
 
   static bool EmbedsScript(Isolate* isolate);