Revised signature of tcLookupFamInst and lookupFamInstEnv

[ghc-hetmet.git] / compiler / typecheck / FamInst.lhs

diff --git a/compiler/typecheck/FamInst.lhs b/compiler/typecheck/FamInst.lhs
index fd98fe9..f85f6b9 100644 (file)
--- a/compiler/typecheck/FamInst.lhs
+++ b/compiler/typecheck/FamInst.lhs
@@ -180,7 +180,7 @@ checkForConflicts inst_envs famInst
 
        ; let { matches   = lookupFamInstEnvUnify inst_envs fam tys'
             ; conflicts = [ conflictingFamInst
-                          | match@(_, conflictingFamInst) <- matches
+                          | match@(conflictingFamInst, _) <- matches
                           , conflicting fam tys' tycon match 
                           ]
             }