#15859: Dependent quantification, GHC panic -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.1 Resolution: | Keywords: TypeInType 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 Richard Eisenberg <rae@…>): In [changeset:"72b82343b79365dc74ffafb345dd33499a7fd394/ghc" 72b82343/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="72b82343b79365dc74ffafb345dd33499a7fd394" Fix #15859 by checking, not assuming, an ArgFlag We thought that visible dependent quantification was impossible in terms, but Iceland Jack discovered otherwise in #15859. This fixes an ASSERT failure that arose. test case: dependent/should_fail/T15859 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15859#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler