#8134: ghc enters a loop while building 7.6.3 for powerpc64 platform. -------------------------------------+----------------------------- Reporter: k0da | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.6.3 Component: Compiler | Version: 7.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: powerpc64 Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+----------------------------- Comment (by Simon Peyton Jones <simonpj@…>): In [changeset:8cfbdccb7f8716c2b6b13b3c7884f52b1087d782/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="8cfbdccb7f8716c2b6b13b3c7884f52b1087d782" Accommodate Derived constraints in two places (fix Trac #8129, #8134) If we have class (F a ~ b) => C a b then we can produce *derived* CFunEqCans. These were not being treated properly in two places: a) in TcMType.zonkFlats (Trac #8134) b) in TcSMonad.prepareInertsForImplications (Trac #8129) This patch fixes both. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8134#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler