#11370: Redundant superclass warnings being included in -Wall destroys the "3 Release Policy" -------------------------------------+------------------------------------- Reporter: ekmett | Owner: Type: bug | Status: new Priority: highest | Milestone: 8.0.1 Component: Compiler (Type | Version: 7.10.3 checker) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #11369, #11429 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by gershomb): I think Ed's comments on the two proposed plans of action are exactly right. Note that two things by the way are intersecting here: 1) GHC adding new warnings in general, which is largely unrelated to the 3-release policy but should be generally managed with some degree of rollout and 2) The presence of warnings at all such as redundant superclasses, which by their very nature warn against code that is necessary and desirable in migration paths. So lots of the details here don't apply to most warnings added -- they apply to this particular one, and adding features so that it and similar warnings can more easily not stand in the way of library evolution, in general. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11370#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler