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[ghc-hetmet.git] / compiler / stgSyn / CoreToStg.lhs

diff --git a/compiler/stgSyn/CoreToStg.lhs b/compiler/stgSyn/CoreToStg.lhs
index 13509ce..1c8d4b1 100644 (file)
--- a/compiler/stgSyn/CoreToStg.lhs
+++ b/compiler/stgSyn/CoreToStg.lhs
@@ -18,7 +18,7 @@ import StgSyn
 import Type
 import TyCon
 import Id
-import Var             ( Var, globalIdDetails, idType )
+import Var             ( Var )
 import IdInfo
 import DataCon
 import CostCentre      ( noCCS )
@@ -1082,9 +1082,16 @@ myCollectArgs expr
     go (Note (SCC _) _) _  = pprPanic "CoreToStg.myCollectArgs" (ppr expr)
     go (Cast e _)       as = go e as
     go (Note _ e)       as = go e as
+    go (Lam b e)        as
+       | isTyVar b         = go e as   -- Note [Collect args]
     go _                _  = pprPanic "CoreToStg.myCollectArgs" (ppr expr)
 \end{code}
 
+Note [Collect args]
+~~~~~~~~~~~~~~~~~~~
+This big-lambda case occurred following a rather obscure eta expansion.
+It all seems a bit yukky to me.
+     
 \begin{code}
 stgArity :: Id -> HowBound -> Arity
 stgArity _ (LetBound _ arity) = arity