#15666: Dependent type synonym in recursive type family causes GHC to panic -------------------------------------+------------------------------------- Reporter: tydeu | 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: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: #15380 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * related: => #15380 Comment: Ah, the commit that fixed this is 59f38587d44efd00b10a6d98f6a7a1b22e87f13a (`Remove the type-checking knot.`) That being said, the program in this ticket is rather different from the one in #15380 (which that commit fixed), since this ticket's program actually does compile. I'll add a separate regression test for this one. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15666#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler