mercurial/revlog.py

--- a/mercurial/revlog.py	Sun Dec 20 18:38:21 2015 -0800
+++ b/mercurial/revlog.py	Fri Dec 18 06:33:48 2015 +0000
@@ -1163,6 +1163,7 @@
         return mdiff.textdiff(self.revision(rev1),
                               self.revision(rev2))
 
+    @util.nogc
     def revision(self, nodeorrev, _df=None):
         """return an uncompressed revision of a given node or revision
         number.