diff options
Diffstat (limited to 'compiler/deSugar/Check.hs')
| -rw-r--r-- | compiler/deSugar/Check.hs | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/compiler/deSugar/Check.hs b/compiler/deSugar/Check.hs index e87eb39d26..4a27d485c0 100644 --- a/compiler/deSugar/Check.hs +++ b/compiler/deSugar/Check.hs @@ -43,6 +43,7 @@ import FastString import DataCon import PatSyn import HscTypes (CompleteMatch(..)) +import BasicTypes (Boxity(..)) import DsMonad import TcSimplify (tcCheckSatisfiability) @@ -1078,12 +1079,17 @@ translatePat fam_insts pat = case pat of TuplePat tys ps boxity -> do tidy_ps <- translatePatVec fam_insts (map unLoc ps) let tuple_con = RealDataCon (tupleDataCon boxity (length ps)) - return [vanillaConPattern tuple_con tys (concat tidy_ps)] + tys' = case boxity of + Boxed -> tys + -- See Note [Unboxed tuple RuntimeRep vars] in TyCon + Unboxed -> map getRuntimeRep tys ++ tys + return [vanillaConPattern tuple_con tys' (concat tidy_ps)] SumPat ty p alt arity -> do tidy_p <- translatePat fam_insts (unLoc p) let sum_con = RealDataCon (sumDataCon alt arity) - return [vanillaConPattern sum_con ty tidy_p] + -- See Note [Unboxed tuple RuntimeRep vars] in TyCon + return [vanillaConPattern sum_con (map getRuntimeRep ty ++ ty) tidy_p] -- -------------------------------------------------------------------------- -- Not supposed to happen |