Re: [GHC] #15505: Assertion failures in tests T7224, T9201, LevPolyBounded

#15505: Assertion failures in tests T7224, T9201, LevPolyBounded -------------------------------------+------------------------------------- Reporter: osa1 | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler (Type | Version: 8.5 checker) | 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 ): In [changeset:"43b08cfbac5ce7ad6fc245651329094896de06e0/ghc" 43b08cfb/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="43b08cfbac5ce7ad6fc245651329094896de06e0" Add a solveEqualities to tcClassDecl1 Trac #15505 showed that, when we have a type error, we could have an unfilled-in coercion hole. We don't want an assertion error in that case. The underlying cause is that tcClassDecl1 should call solveEqualities to fully solve all top-level equalities (or fail in the attempt). I also refactored the ClassDecl case for tcTyClDecl1 into a new function tcClassDecl1. That makes it symmetrical with the others. }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15505#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler