Re: [GHC] #14218: GHC.Stack.HasCallStack not compatible with constraint synonyms

#14218: GHC.Stack.HasCallStack not compatible with constraint synonyms -------------------------------------+------------------------------------- Reporter: ntc2 | Owner: (none) Type: bug | Status: merge Priority: normal | Milestone: 8.2.2 Component: Compiler | Version: 8.2.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: | typecheck/should_run/T14218 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones ): In [changeset:"c41ccbfa8aaeb99dd9a36cb3d99993f0fa039cdc/ghc" c41ccbfa/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="c41ccbfa8aaeb99dd9a36cb3d99993f0fa039cdc" Omit Typeable from the "naturally coherent" list In doing something else (Trac #14218) I tripped over the definition of "naturally coherent" classes. This patch - Cocuments properly what that means - Removes Typeable from the list, because now we know what it meams, Typeable clearly doesn't belong. No regressions. (Actually the term "naturally coherent" seems a bit off. More like "invertible" or something. But I left it.) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14218#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler