From 58c2c152663001dbe796a95869da54e95b39b482 Mon Sep 17 00:00:00 2001
From: ThomasV <thomasv@electrum.org>
Date: Fri, 8 Feb 2019 08:21:18 +0100
Subject: [PATCH] follow up 6fb974227ba924c877e50defc36d7a3006660ef4

---
 electrum/storage.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/electrum/storage.py b/electrum/storage.py
index bb726ae18..67540e3e7 100644
--- a/electrum/storage.py
+++ b/electrum/storage.py
@@ -137,6 +137,8 @@ class JsonDB(PrintError):
             os.fsync(f.fileno())
 
         mode = os.stat(self.path).st_mode if self.file_exists() else stat.S_IREAD | stat.S_IWRITE
+        if not file_exists():
+            assert not os.path.exists(self.path)
         os.replace(temp_path, self.path)
         os.chmod(self.path, mode)
         self._file_exists = True