Re: [GHC] #11148: T9563 doesn't pass with reversed uniques

#11148: T9563 doesn't pass with reversed uniques -------------------------------------+------------------------------------- Reporter: niteria | Owner: Type: bug | Status: closed Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.10.2 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: | deriving/should_compile/T11148 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones ): In [changeset:"e2f7d777bb7e4c176e01e1c4f8184f115253dee0/ghc" e2f7d777/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="e2f7d777bb7e4c176e01e1c4f8184f115253dee0" A tiny, outright bug in tcDataFamInstDecl This bug was revealed by Trac #11362. It turns out that in my patch for Trac #11148 (namely 1160dc5), I failed to turn one occurrence of tvs' into full_tvs. Sigh. This is tricky stuff and it cost me several hours to page it back in and figure out what was happening. The result was a CoAxiom whose lhs had rhs had different kinds. Eeek! Anyway it's fixed. I also added an ASSERT, in FamInst.newFamInst, that trips on such bogus CoAxioms. }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11148#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler