--- a/tests/test-hup.t	Thu Apr 05 15:39:07 2012 +0200
+++ b/tests/test-hup.t	Thu Apr 05 12:31:21 2012 +0100
@@ -11,7 +11,7 @@
   $ (
   > echo lock
   > echo addchangegroup
-  > while [ ! -s .hg/store/journal ]; do true; done
+  > while [ ! -s .hg/store/journal ]; do sleep 0; done
   > kill -HUP $P
   > ) > p