#13929: GHC panic with levity polymorphism -------------------------------------+------------------------------------- Reporter: vagarenko | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.2.2 Component: Compiler | Version: 8.2.1-rc2 Resolution: | Keywords: TypeInType, | LevityPolymorphism 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 vagarenko): Replying to [comment:14 bgamari]: Now I see. Thank you for the very thorough explanation! Replying to [comment:10 Ben Gamari <ben@…>]:
In [changeset:"fa626f3b1c1140a1f10bba60fdde10f767863f70/ghc" fa626f3/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="fa626f3b1c1140a1f10bba60fdde10f767863f70" Fix #13929 by adding another levity polymorphism check
test case: typecheck/should_fail/T13929 }}}
Have you tested that patch with unboxed sums? See my comment:8 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13929#comment:16> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler