# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 2013-10-02 12:16:40
# Node ID 76c83107a724ce6069098075427575f665f01a7f
# Parent  0f99747202f964b6f3717505755cad08d608ac5c

lock: handle race in trylock/testlock on Windows

readlock may raise IOError if the system does not support symlink.

diff --git a/mercurial/lock.py b/mercurial/lock.py
--- a/mercurial/lock.py
+++ b/mercurial/lock.py
@@ -100,7 +100,7 @@ class lock(object):
         """
         try:
             locker = util.readlock(self.f)
-        except OSError, why:
+        except (OSError, IOError), why:
             if why.errno == errno.ENOENT:
                 return None
             raise