22 Dec
2007
22 Dec
'07
2:59 p.m.
Hi
What is happening here ? Does importing Data.Char shadow (in a hidden way) some timeworn types or methods in the Prelude ? If so, ghc might be still faster than it looks now.
There is absolutely no way this could be correct behavior.
Not true - importing an additional (but apparently unused) module can introduce new rules, pragmas and instances into scope, which can effect the optimisation. However, in this case, it looks like a bug - in either GHC or Joost's testing. Thanks Neil