6 Jan
2006
6 Jan
'06
6:16 a.m.
On Fri, Jan 06, 2006 at 01:52:23PM +0300, Bulat Ziganshin wrote:
the following program fails to load in Hugs2005 with all Haskell extensions enabled:
instance (CharStream m h) => ByteStream m h where ... instance (ByteStream m h) => CharStream m h where ...
Looks circular to me, i.e. there's no justification for inferring instances of either class. However recent GHC's spot the recursion in such cases and create mutually recursive instances.