# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 2009-05-25 17:48:15
# Node ID 8536119f2f94aea7f0de7368341be6f69af3e0c5
# Parent  1323dddf80782ad945b264b5293606d3ca827fc1

dirstate: notice truncated parents read

diff --git a/mercurial/dirstate.py b/mercurial/dirstate.py
--- a/mercurial/dirstate.py
+++ b/mercurial/dirstate.py
@@ -75,6 +75,8 @@ class dirstate(object):
             st = self._opener("dirstate").read(40)
             if len(st) == 40:
                 return st[:20], st[20:40]
+            if len(st) < 40:
+                raise util.Abort(_('working directory state appears damaged!'))
         except IOError, err:
             if err.errno != errno.ENOENT: raise
         return [nullid, nullid]