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-rw-r--r--compiler/coreSyn/CoreFVs.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/coreSyn/CoreFVs.hs b/compiler/coreSyn/CoreFVs.hs
index bc54d26ad3..18e109a745 100644
--- a/compiler/coreSyn/CoreFVs.hs
+++ b/compiler/coreSyn/CoreFVs.hs
@@ -353,7 +353,7 @@ orphNamesOfType (TyConApp tycon tys) = orphNamesOfTyCon tycon
`unionNameSet` orphNamesOfTypes tys
orphNamesOfType (ForAllTy bndr res) = orphNamesOfType (binderType bndr)
`unionNameSet` orphNamesOfType res
-orphNamesOfType (FunTy arg res) = unitNameSet funTyConName -- NB! See Trac #8535
+orphNamesOfType (FunTy _ arg res) = unitNameSet funTyConName -- NB! See Trac #8535
`unionNameSet` orphNamesOfType arg
`unionNameSet` orphNamesOfType res
orphNamesOfType (AppTy fun arg) = orphNamesOfType fun `unionNameSet` orphNamesOfType arg