#10347: Spurious "unused constructor" warning with Coercible -------------------------------------+------------------------------------- Reporter: goldfire | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: Incorrect | Test Case: warning at compile-time | typecheck/should_compile/T10347 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by dfeuer): * cc: dfeuer (added) Comment: One partial solution would be a pragma disabling the usage warning for a particular binding. {{{#!hs newtype N = N Int test :: N -> N test = ... {-# Ignore-Usage type N, N, test #-} }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10347#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler