X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=utils%2Fhpc%2FHpcParser.y;h=01307bf565d17a1f14c934c9c8d962ebf5923b34;hb=0885017a4e92fe5710d1427c214adb87b92987e5;hp=b99e3246cf95749bcc321c812694baa393bdd7e4;hpb=1a660e030bd3aaaa34adfea77d72856cdb48479e;p=ghc-hetmet.git

diff --git a/utils/hpc/HpcParser.y b/utils/hpc/HpcParser.y
index b99e324..01307bf 100644
--- a/utils/hpc/HpcParser.y
+++ b/utils/hpc/HpcParser.y
@@ -1,5 +1,14 @@
 { 
-{-# OPTIONS -Wwarn #-}
+{-# LANGUAGE BangPatterns #-} -- required for versions of Happy before 1.18.6
+{-# OPTIONS -Wwarn -XNoMonomorphismRestriction #-}
+-- The NoMonomorphismRestriction deals with a Happy infelicity
+--    With OutsideIn's more conservativ monomorphism restriction
+--    we aren't generalising
+--        notHappyAtAll = error "urk"
+--    which is terrible.  Switching off the restriction allows
+--    the generalisation.  Better would be to make Happy generate
+--    an appropriate signature.
+--
 -- The above warning supression flag is a temporary kludge.
 -- While working on this module you are encouraged to remove it and fix
 -- any warnings in the module. See