# HG changeset patch
# User Boris Feld <boris.feld@octobus.net>
# Date 1531527043 -7200
# Node ID 89d93dd1a22238cb1ac8462522c283f251f65fa9
# Parent  2cdb82e8fb44346cdf8e9a27377a64642d0b212f
store: assert the fncache have been loaded if dirty

This should catch fncache corruption as the one that existed in
`perffncachewrite`.

diff -r 2cdb82e8fb44 -r 89d93dd1a222 mercurial/store.py
--- a/mercurial/store.py	Sat Jul 14 02:09:47 2018 +0200
+++ b/mercurial/store.py	Sat Jul 14 02:10:43 2018 +0200
@@ -449,6 +449,7 @@
 
     def write(self, tr):
         if self._dirty:
+            assert self.entries is not None
             tr.addbackup('fncache')
             fp = self.vfs('fncache', mode='wb', atomictemp=True)
             if self.entries: