#16163: Don’t throw an error (by default) for use of DEPRECATED symbols under -Werror -------------------------------------+------------------------------------- Reporter: m-renaud | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.3 Resolution: | Keywords: 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 m-renaud): Thank you for the feedback! I completely agree with the concerns raised here, I just posted a comment to the Reddit thread[1] that clarifies how this proposal fits into to the issue I'm trying to address (which I should have made more/clear prominent in this proposal). In summary (see linked thread for more details), the main problem I'm trying to solve is the lack of policy/clarity around deprecating APIs, specifically that anything that causes a breakage under `-Werror` requires a major version bump. This can either be addressed by a policy change, or a code/behaviour change (this proposal). Having both in hand you can compare the pros/cons of each instead of talking about "some proposal that could exist" in the abstract. I personally would prefer a policy change, in which case this proposal would become obsolete. There's also the fact that I should have broken this into two: A. differentiate between `DEPRECATED` and `WARNING` at the flag level (currently they're conflated). And B. which changes the behaviour of `-Werror`. I think (A) is non-controversial (and should probably be done anyways?), (B) is the controversial part since its a change in behaviour. Let me know your thoughts, as well as if you would be in favour of the policy change instead of this proposal. Thanks! [1] https://www.reddit.com/r/haskell/comments/aelbv7/rfc_ghc_proposal_dont_throw... -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16163#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler