Commit 9fd41268 authored by Ian Lynagh's avatar Ian Lynagh
Browse files

Remove the need for undecidable instances in LazyUniqFM

parent 58c73734
......@@ -599,10 +599,6 @@ endif
# prototype via a global option instead of a myriad of per-file OPTIONS
SRC_HC_OPTS += '-\#include "cutils.h"'
ifeq "$(ghc_ge_605)" "NO"
utils/LazyUniqFM_HC_OPTS += -fallow-undecidable-instances
endif
# ----------------------------------------------------------------------------
# Generate supporting stuff for prelude/PrimOp.lhs
# from prelude/primops.txt
......
......@@ -12,7 +12,6 @@ Basically, the things need to be in class @Uniquable@, and we use the
\begin{code}
{-# OPTIONS -Wall -fno-warn-name-shadowing -Werror #-}
{-# LANGUAGE UndecidableInstances #-}
module LazyUniqFM (
UniqFM, -- abstract type
......@@ -180,7 +179,7 @@ data Lazy a = Lazy { fromLazy :: a }
newtype UniqFM ele = MkUniqFM (S.UniqFM (Lazy ele))
instance Outputable (S.UniqFM (Lazy a)) => Outputable (UniqFM a) where
instance Outputable a => Outputable (UniqFM a) where
ppr (MkUniqFM fm) = ppr fm
instance Outputable a => Outputable (Lazy a) where
......
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