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-rw-r--r--compiler/GHC/Tc/TyCl/Build.hs2
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/GHC/Tc/TyCl/Build.hs b/compiler/GHC/Tc/TyCl/Build.hs
index 8c855dacbc..9f508491dc 100644
--- a/compiler/GHC/Tc/TyCl/Build.hs
+++ b/compiler/GHC/Tc/TyCl/Build.hs
@@ -211,6 +211,8 @@ buildPatSyn :: Name -> Bool
-> ([InvisTVBinder], ThetaType) -- ^ Univ and req
-> ([InvisTVBinder], ThetaType) -- ^ Ex and prov
-> [Type] -- ^ Argument types
+ -- These must have a fixed RuntimeRep as per
+ -- Note [Fixed RuntimeRep] in GHC.Tc.Utils.Concrete.
-> Type -- ^ Result type
-> [FieldLabel] -- ^ Field labels for
-- a record pattern synonym