TODO: update; Debug: note about `printfFake'

[mate.git] / Mate / Debug.hs

diff --git a/Mate/Debug.hs b/Mate/Debug.hs
index 8c1ca63b6b0293a06845f3d307a1fdefa30b7e63..dc8954eb84cb4eb184842209aa46a3c654d5deec 100644 (file)
--- a/Mate/Debug.hs
+++ b/Mate/Debug.hs
@@ -16,6 +16,7 @@ instance VarArgsFake (IO a) where
 instance (Show a, VarArgsFake r) => VarArgsFake (a -> r) where
   varFake _ _ = varFake []
 
+-- note: with -O2 GHC is able to completely optimize away such a `printfFake' call
 printfFake :: String -> (VarArgsFake t) => t
 printfFake _ = varFake []