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-rw-r--r--compiler/GHC/Tc/TyCl.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/GHC/Tc/TyCl.hs b/compiler/GHC/Tc/TyCl.hs
index 28d3651876..bd47bf7bd9 100644
--- a/compiler/GHC/Tc/TyCl.hs
+++ b/compiler/GHC/Tc/TyCl.hs
@@ -3416,7 +3416,7 @@ tcConArg exp_kind (HsScaled w bty)
; return (Scaled w' arg_ty, getBangStrictness bty) }
tcDataConMult :: HsArrow GhcRn -> TcM Mult
-tcDataConMult arr@HsUnrestrictedArrow = do
+tcDataConMult arr@(HsUnrestrictedArrow _) = do
-- See Note [Function arrows in GADT constructors]
linearEnabled <- xoptM LangExt.LinearTypes
if linearEnabled then tcMult arr else return oneDataConTy