X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Ftypecheck%2FTcHsSyn.lhs;h=6120621095bca212bb537ea9cebdb91d9675f777;hp=ffd2893a5eee063d72902984cdad602b0ebe3b08;hb=9d0c8f842e35dde3d570580cf62a32779f66a6de;hpb=ab1d5052de53479377c961d1e966f0cf0b82c592

diff --git a/compiler/typecheck/TcHsSyn.lhs b/compiler/typecheck/TcHsSyn.lhs
index ffd2893..6120621 100644
--- a/compiler/typecheck/TcHsSyn.lhs
+++ b/compiler/typecheck/TcHsSyn.lhs
@@ -1071,7 +1071,7 @@ mkArbitraryType warn tv
   , isLiftedTypeKind res			--    Horrible hack to make less use 
   = return (mkTyConApp tup_tc [])		--    of mkAnyPrimTyCon
   | otherwise
-  = do	{ warn (getSrcSpan tv) msg
+  = do	{ _ <- warn (getSrcSpan tv) msg
 	; return (mkTyConApp (mkAnyPrimTyCon (getUnique tv) kind) []) }
 		-- Same name as the tyvar, apart from making it start with a colon (sigh)
 		-- I dread to think what will happen if this gets out into an