Fix misleading debug trace

[ghc-hetmet.git] / compiler / types / Type.lhs

diff --git a/compiler/types/Type.lhs b/compiler/types/Type.lhs
index fe70716..7d42d8c 100644 (file)
--- a/compiler/types/Type.lhs
+++ b/compiler/types/Type.lhs
@@ -89,6 +89,7 @@ module Type (
        mkTvSubst, mkOpenTvSubst, zipOpenTvSubst, zipTopTvSubst, mkTopTvSubst, notElemTvSubst,
        getTvSubstEnv, setTvSubstEnv, getTvInScope, extendTvInScope,
        extendTvSubst, extendTvSubstList, isInScope, composeTvSubst, zipTyEnv,
+        isEmptyTvSubst,
 
        -- Performing substitution on types
        substTy, substTys, substTyWith, substTheta, 
@@ -1220,7 +1221,7 @@ zipTopTvSubst :: [TyVar] -> [Type] -> TvSubst
 zipTopTvSubst tyvars tys 
 #ifdef DEBUG
   | length tyvars /= length tys
-  = pprTrace "zipOpenTvSubst" (ppr tyvars $$ ppr tys) emptyTvSubst
+  = pprTrace "zipTopTvSubst" (ppr tyvars $$ ppr tys) emptyTvSubst
   | otherwise
 #endif
   = TvSubst emptyInScopeSet (zipTyEnv tyvars tys)