Fix CodingStyle#Warnings URLs

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

diff --git a/compiler/typecheck/TcTyFuns.lhs b/compiler/typecheck/TcTyFuns.lhs
index 141afb1..dae7416 100644 (file)
--- a/compiler/typecheck/TcTyFuns.lhs
+++ b/compiler/typecheck/TcTyFuns.lhs
@@ -4,7 +4,7 @@
 -- The above warning supression flag is a temporary kludge.
 -- While working on this module you are encouraged to remove it and fix
 -- any warnings in the module. See
---     http://hackage.haskell.org/trac/ghc/wiki/CodingStyle#Warnings
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
 -- for details
 
 module TcTyFuns(
@@ -591,10 +591,11 @@ decompInst i@(EqInst {})
       | con1 /= con2 && not (isOpenSynTyCon con1 || isOpenSynTyCon con2)
         -- not matching data constructors (of any flavour) are bad news
       = do { env0 <- tcInitTidyEnv
-           ; let (env1, tidy_ty1)  =  tidyOpenType env0 ty1
-                 (env2, tidy_ty2)  =  tidyOpenType env1 ty2
-                 extra                  = sep [ppr tidy_ty1, char '~', ppr tidy_ty2]
-                 msg            = ptext SLIT("Couldn't match expected type against inferred type")
+           ; let (env1, tidy_ty1) = tidyOpenType env0 ty1
+                 (env2, tidy_ty2) = tidyOpenType env1 ty2
+                 extra                   = sep [ppr tidy_ty1, char '~', ppr tidy_ty2]
+                 msg             = 
+                   ptext SLIT("Unsolvable equality constraint:")
            ; failWithTcM (env2, hang msg 2 extra)
            }
       where