[project @ 2001-07-19 09:24:56 by simonpj]

Output a slightly better message for -ddump-hi-diffs

diff --git a/ghc/compiler/rename/RnIfaces.lhs b/ghc/compiler/rename/RnIfaces.lhs
index 443c642..b5a3ebb 100644 (file)
--- a/ghc/compiler/rename/RnIfaces.lhs
+++ b/ghc/compiler/rename/RnIfaces.lhs
@@ -859,8 +859,10 @@ checkEntityUsage new_vers (name,old_vers)
                          out_of_date (sep [ptext SLIT("No longer exported:"), ppr name])
 
        Just new_vers   -- It's there, but is it up to date?
-         | new_vers == old_vers -> traceHiDiffsRn (text "Up to date" <+> ppr name <+> parens (ppr new_vers)) `thenRn_` returnRn upToDate
-         | otherwise            -> out_of_date (sep [ptext SLIT("Out of date:"), ppr name])
+         | new_vers == old_vers -> traceHiDiffsRn (text "Up to date" <+> ppr name <+> parens (ppr new_vers)) `thenRn_`
+                                   returnRn upToDate
+         | otherwise            -> out_of_date (sep [ptext SLIT("Out of date:"), ppr name, ppr 
+                                                     old_vers, ptext SLIT("->"), ppr new_vers])
 
 up_to_date  msg = traceHiDiffsRn msg `thenRn_` returnRn upToDate
 out_of_date msg = traceHiDiffsRn msg `thenRn_` returnRn outOfDate