#14386: GHC doesn't allow Coercion between partly-saturated type constructors -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.3 Resolution: | Keywords: roles 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 goldfire): This seems to be yet another way representational equality could, theoretically, expand. Note that, unlike certain other problems, this isn't a limitation of the solver, but of the definition of the equality relation itself. It might be helpful to maintain a list of such deficiencies. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14386#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler