[project @ 1999-07-27 11:09:31 by simonmar]

Allow mkWeak# to take an unlifted type as the key argument.  The
intention is that boxed-but-unlifted types can be used as keys, not
unlifted types in general but there's no way to enforce this at the
moment.

diff --git a/ghc/compiler/prelude/PrimOp.lhs b/ghc/compiler/prelude/PrimOp.lhs
index 6634fe8..24bd867 100644 (file)
--- a/ghc/compiler/prelude/PrimOp.lhs
+++ b/ghc/compiler/prelude/PrimOp.lhs
@@ -35,7 +35,7 @@ import RdrName                ( RdrName, mkRdrQual )
 import OccName         ( OccName, pprOccName, mkSrcVarOcc )
 import TyCon           ( TyCon, tyConArity )
 import Type            ( Type, mkForAllTys, mkForAllTy, mkFunTy, mkFunTys, mkTyVarTys,
-                         mkTyConTy, mkTyConApp, typePrimRep,
+                         mkTyConTy, mkTyConApp, typePrimRep,mkTyVarTy,
                          splitFunTy_maybe, splitAlgTyConApp_maybe, splitTyConApp_maybe,
                           UsageAnn(..), mkUsgTy
                        )
@@ -1639,8 +1639,8 @@ In practice, you'll use the higher-level
 
 \begin{code}
 primOpInfo MkWeakOp
-  = mkGenPrimOp SLIT("mkWeak#") [alphaTyVar, betaTyVar, gammaTyVar] 
-       [alphaTy, betaTy, gammaTy, realWorldStatePrimTy]
+  = mkGenPrimOp SLIT("mkWeak#") [openAlphaTyVar, betaTyVar, gammaTyVar] 
+       [mkTyVarTy openAlphaTyVar, betaTy, gammaTy, realWorldStatePrimTy]
        (unboxedPair [realWorldStatePrimTy, mkWeakPrimTy betaTy])
 \end{code}