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-rw-r--r--compiler/deSugar/DsArrows.lhs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/deSugar/DsArrows.lhs b/compiler/deSugar/DsArrows.lhs
index 76f167d0f4..b825acb836 100644
--- a/compiler/deSugar/DsArrows.lhs
+++ b/compiler/deSugar/DsArrows.lhs
@@ -1155,7 +1155,7 @@ collectl (L _ pat) bndrs
go (AsPat (L _ a) pat) = a : collectl pat bndrs
go (ParPat pat) = collectl pat bndrs
- go (ListPat pats _) = foldr collectl bndrs pats
+ go (ListPat pats _ _) = foldr collectl bndrs pats
go (PArrPat pats _) = foldr collectl bndrs pats
go (TuplePat pats _ _) = foldr collectl bndrs pats