diff options
Diffstat (limited to 'compiler/GHC/Rename/Pat.hs')
| -rw-r--r-- | compiler/GHC/Rename/Pat.hs | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/compiler/GHC/Rename/Pat.hs b/compiler/GHC/Rename/Pat.hs index d2bbb3bbef..426ce97e6b 100644 --- a/compiler/GHC/Rename/Pat.hs +++ b/compiler/GHC/Rename/Pat.hs @@ -44,6 +44,7 @@ import {-# SOURCE #-} GHC.Rename.Expr ( rnLExpr ) import {-# SOURCE #-} GHC.Rename.Splice ( rnSplicePat ) import GHC.Hs +import GHC.Hs.Pat ( patHasTyAppsL ) import GHC.Tc.Errors.Types import GHC.Tc.Utils.Monad import GHC.Tc.Utils.Zonk ( hsOverLitName ) @@ -612,7 +613,12 @@ rnPatAndThen mk (TuplePat _ pats boxed) rnPatAndThen mk (OrPat _ pats) = do { pats' <- rnLPatsAndThen mk pats - ; return (OrPat noExtField pats') } + ; let orpat :: Pat GhcRn = OrPat noExtField pats' + ; let varBnds = collectPatsBinders CollNoDictBinders pats + -- mapM_ (\(b,i) -> pprTraceM ("bnds " ++ show i) b) (zip (map ppr bnds) [0..]) + ; liftCps $ checkErr (null varBnds) (TcRnOrPatBindsVariables orpat) + ; liftCps $ checkErr (not $ any patHasTyAppsL pats) (TcRnOrPatHasVisibleTyApps orpat) + ; return orpat } rnPatAndThen mk (SumPat _ pat alt arity) = do { pat <- rnLPatAndThen mk pat |