Patrik Jansson writes:
> [In ghc-2.10 and ghc-3.01]
>
> The ghc version of the ST module
>
> ghc/lib/exts/ST.lhs
>
> makes (ST s) a Monad but not a Functor.
>
> In hugs 1.4 February it is both a Monad and a Functor.
>
ST should be an instance in Functor. Will fix for the next version -
t
[In ghc-2.10 and ghc-3.01]
The ghc version of the ST module
ghc/lib/exts/ST.lhs
makes (ST s) a Monad but not a Functor.
In hugs 1.4 February it is both a Monad and a Functor.
I don't know where to look for a formal definition for these extension
libraries, but I think hugs is right and that
> Ambiguous uses of multi-param type classes are sometimes silently turned
> into Void instances, instead of giving an error message.
Great bug report: brief, precise, and with a short program
demonstrating the problem. Thank you.
The difficulty was with functions like this:
f :: foral
Compiling with -prof doesn't work on HPs (HP-UX 10.20):
-- Main.hs --
main = return ()
-
panne@rimatara: > ghc-3.01 -prof Main.hs
ghc-3.01: module version changed to 1; reason: no old .hi file
collect2: ld returned 1 exit status
/usr/bin/ld: Internal Error 4012 (inval
