[project @ 2002-04-05 23:24:25 by sof]

[ghc-hetmet.git] / ghc / compiler / specialise / Specialise.lhs

diff --git a/ghc/compiler/specialise/Specialise.lhs b/ghc/compiler/specialise/Specialise.lhs
index 59c52d1..16d3748 100644 (file)
--- a/ghc/compiler/specialise/Specialise.lhs
+++ b/ghc/compiler/specialise/Specialise.lhs
@@ -41,7 +41,7 @@ import BasicTypes     ( Activation( AlwaysActive ) )
 import Bag
 import List            ( partition )
 import Util            ( zipEqual, zipWithEqual, cmpList, lengthIs,
-                         equalLength, lengthAtLeast )
+                         equalLength, lengthAtLeast, notNull )
 import Outputable
 
 
@@ -786,7 +786,7 @@ specDefn subst calls (fn, rhs)
        -- The first case is the interesting one
   |  rhs_tyvars `lengthIs` n_tyvars    -- Rhs of fn's defn has right number of big lambdas
   && rhs_bndrs  `lengthAtLeast` n_dicts        -- and enough dict args
-  && not (null calls_for_me)           -- And there are some calls to specialise
+  && notNull calls_for_me              -- And there are some calls to specialise
   && not (isDataConWrapId fn)          -- And it's not a data con wrapper, which have
                                        -- stupid overloading that simply discard the dictionary