Repository : ssh://darcs.haskell.org//srv/darcs/ghc On branch : master
http://hackage.haskell.org/trac/ghc/changeset/969f8b728be0a2fec8263e8866295776c993394b >--------------------------------------------------------------- commit 969f8b728be0a2fec8263e8866295776c993394b Author: Simon Peyton Jones <[email protected]> Date: Wed May 16 11:13:52 2012 +0100 Be careful to instantiate kind variables when dealing with functional dependencies There were really two bugs a) When the fundep fires we must apply the matching substitution to the kinds of the remaining type vars (This happens in FunDeps.checkClsFD, when we create meta_tvs) b) When instantiating the un-matched type variables we must instantiate their kinds properly (This happens in TcSMonad.instFlexiTcS) This fixes #6068 and #6015 (second reported bug). compiler/typecheck/TcInteract.lhs | 6 +-- compiler/typecheck/TcSMonad.lhs | 8 +++- compiler/types/FunDeps.lhs | 87 ++++++++++++++++++++++--------------- 3 files changed, 60 insertions(+), 41 deletions(-) Diff suppressed because of size. To see it, use: git show 969f8b728be0a2fec8263e8866295776c993394b _______________________________________________ Cvs-ghc mailing list [email protected] http://www.haskell.org/mailman/listinfo/cvs-ghc
