On Thu, Mar 20, 2008 at 02:38:56AM -0400, Bryan Donlan wrote: > > I've found a case where GHC will hang (consuming more and more memory) > when it should report an occurs check error. The test case is at > http://fushizen.net/~bd/kaos-ghc.loop.tgz - the error in question is > that the arguments in the StateT instance for HOLift are reversed like > so: > > -instance HOLift m (StateT s m) where > +instance HOLift (StateT s m) m where
I haven't looked at this in detail, but you have enabled the UndecidableInstances extension, so it's not necessarily a bug if the type checker goes into a loop. Thanks Ian _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
