#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 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by quchen): I agree with Simon that things like redundant constraints are not "probably broken" (warnings) or broken (errors). I'm a big fan of compilers educating users to best practices (advisories), and redundant constraints fall into this category. It's as bad as trailing whitespace, literal tabs, or redundant parentheses. That said, I think we need a more strict "-Wall", I named it "-WALL" for the lack of a better name (-Wpedantic akin to GCC would also work, or -Wlint) where we enable such suggestions. This flag would be useful for building-and-fixing once-ish per release, and would make no compatibility guarantees. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11370#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler