--- /dev/null
+{-# GHC_PRAGMA INTERFACE VERSION 5 #-}
+interface ChannelVar where
+import PreludeIOError(IOError13)
+import PreludeMonadicIO(Either)
+import PreludePrimIO(_MVar)
+data CVar a {-# GHC_PRAGMA CVar (_MVar a) (_MVar ()) #-}
+data _MVar a {-# GHC_PRAGMA _MVar (SynchVar# _RealWorld a) #-}
+getCVar :: CVar a -> _State _RealWorld -> (Either IOError13 a, _State _RealWorld)
+ {-# GHC_PRAGMA _A_ 2 _U_ 11 _N_ _S_ "U(U(P)L)U(P)" {_A_ 3 _U_ 212 _N_ _N_ _N_ _N_} _N_ _N_ #-}
+newCVar :: _State _RealWorld -> (Either IOError13 (CVar a), _State _RealWorld)
+ {-# GHC_PRAGMA _A_ 1 _U_ 1 _N_ _S_ "U(P)" {_A_ 1 _U_ 2 _N_ _N_ _N_ _N_} _N_ _N_ #-}
+putCVar :: CVar a -> a -> _State _RealWorld -> (Either IOError13 (), _State _RealWorld)
+ {-# GHC_PRAGMA _A_ 3 _U_ 121 _N_ _S_ "U(LU(P))LU(P)" {_A_ 4 _U_ 1222 _N_ _N_ _N_ _N_} _N_ _N_ #-}
+