push/pull: abort if we try to visit a missing or empty revlog

mercurial/localrepo.py

@@ -1710,6 +1710,8 b' class localrepository(repo.repository):'
             # Go through all our files in order sorted by name.
             for fname in changedfiles:
                 filerevlog = self.file(fname)
+                if filerevlog.count() == 0:
+                    raise util.abort(_("empty or missing revlog for %s") % fname)
                 # Toss out the filenodes that the recipient isn't really
                 # missing.
                 if msng_filenode_set.has_key(fname):
@@ -1794,6 +1796,8 b' class localrepository(repo.repository):'
 
             for fname in changedfiles:
                 filerevlog = self.file(fname)
+                if filerevlog.count() == 0:
+                    raise util.abort(_("empty or missing revlog for %s") % fname)
                 nodeiter = gennodelst(filerevlog)
                 nodeiter = list(nodeiter)
                 if nodeiter: