#15276: Bogus type in typechecker error recovery -------------------------------------+------------------------------------- Reporter: simonpj | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones <simonpj@…>): In [changeset:"807ab222d08c11a4d00064c9835f9ed9f20ffc7c/ghc" 807ab22/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="807ab222d08c11a4d00064c9835f9ed9f20ffc7c" Fix the bind-recovery type This patch uses (forall (a::*). a) for the type to use when recovering from an error in a binding. Previously (Trac #15276) we had (forall r (a :: TYPE r). a), which is ill-kinded. It's quite hard to provoke an error arising from this, because it only happens in programs that have a type error anyway, but in a subequent patch I make typeKind fall over if it returns an ill-scoped kind, and that makes ghci/scripts/T13202 crash without this fix. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15276#comment:1> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler