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-rw-r--r--compiler/GHC/Tc/TyCl/PatSyn.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/GHC/Tc/TyCl/PatSyn.hs b/compiler/GHC/Tc/TyCl/PatSyn.hs
index 6f8e1ef901..2ba02e3584 100644
--- a/compiler/GHC/Tc/TyCl/PatSyn.hs
+++ b/compiler/GHC/Tc/TyCl/PatSyn.hs
@@ -959,7 +959,7 @@ tcPatSynBuilderBind prag_fn (PSB { psb_id = ps_lname@(L loc ps_name)
patSynBuilderOcc :: PatSyn -> Maybe (HsExpr GhcTc, TcSigmaType)
patSynBuilderOcc ps
| Just (_, builder_ty, add_void_arg) <- patSynBuilder ps
- , let builder_expr = HsConLikeOut noExtField (PatSynCon ps)
+ , let builder_expr = mkConLikeTc (PatSynCon ps)
= Just $
if add_void_arg
then ( builder_expr -- still just return builder_expr; the void# arg