# HG changeset patch
# User Alexis S. L. Carvalho <alexis@cecm.usp.br>
# Date 1184885005 10800
# Node ID 6b3ed43f77bab079ea1afc6b85a5f1d851ce3b9e
# Parent  a11921d24ec4f6cdc1720d4d37f90c6f9a74ad2f
dirstate.invalidate: avoid rebuilding _map

Since hasattr will call __getattr__, the call to hasattr(self, '_dirs')
will end up reparsing the dirstate file.

diff --git a/mercurial/dirstate.py b/mercurial/dirstate.py
--- a/mercurial/dirstate.py
+++ b/mercurial/dirstate.py
@@ -164,8 +164,8 @@ class dirstate(object):
 
     def invalidate(self):
         for a in "_map _copymap _branch _pl _dirs _ignore".split():
-            if hasattr(self, a):
-                self.__delattr__(a)
+            if a in self.__dict__:
+                delattr(self, a)
         self._dirty = 0
 
     def copy(self, source, dest):