[GHC] #15839: DerivingStrategies defaulting warning has no associated enable/suppress flag
GHC
ghc-devs at haskell.org
Wed Oct 31 22:31:31 UTC 2018
#15839: DerivingStrategies defaulting warning has no associated enable/suppress
flag
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Reporter: tejon | Owner: (none)
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 8.6.1
Resolution: | Keywords: deriving,
| newcomer
Operating System: Unknown/Multiple | Architecture:
Type of failure: Poor/confusing | Unknown/Multiple
error message | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s):
Wiki Page: |
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Comment (by tejon):
Ah, good catch -- I guess I never tried without `DerivingStrategies`. I'll
update the bug description, and include your minimum example.
For flag name I nominate `-Wderiving-defaults`, after the pattern of
`-Wtype-defaults`.
It sounds like this would be an easy way to get my toes wet in the GHC
codebase. If there's no argument with my flag suggestion, I'll try to
implement it myself.
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15839#comment:2>
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