Rename parameters to make debugging code compile.

diff --git a/compiler/specialise/Rules.lhs b/compiler/specialise/Rules.lhs
index a15cc6f..c300f77 100644 (file)
--- a/compiler/specialise/Rules.lhs
+++ b/compiler/specialise/Rules.lhs
@@ -567,7 +567,7 @@ match menv subst (Cast e1 co1) (Cast e2 co2)
        ; match menv subst1 e1 e2 }
 
 -- Everything else fails
-match _ _ _e1 _e2 = -- pprTrace "Failing at" ((text "e1:" <+> ppr e1) $$ (text "e2:" <+> ppr e2)) $ 
+match _ _ _e1 _e2 = -- pprTrace "Failing at" ((text "e1:" <+> ppr _e1) $$ (text "e2:" <+> ppr _e2)) $ 
                         Nothing
 
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