#14270: GHC HEAD's ghc-stage1 panics on Data.Typeable.Internal -------------------------------------+------------------------------------- Reporter: hvr | Owner: bgamari Type: bug | Status: new Priority: high | Milestone: 8.4.1 Component: Compiler | Version: 8.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: #14236 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): Ahh, so it seems like the coercion variables in question only occur in types. However, `match_ty` doesn't contribute to the `RuleSubst`'s id substitution. Consequently the variables never make it into the substitution. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14270#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler