[GHC] #13648: ApplicativeDo selects "GHC.Base.Monad.return" when actions are used without patterns.
GHC
ghc-devs at haskell.org
Tue Jan 15 11:45:45 UTC 2019
#13648: ApplicativeDo selects "GHC.Base.Monad.return" when actions are used without
patterns.
-------------------------------------+-------------------------------------
Reporter: AaronFriel | Owner: (none)
Type: bug | Status: closed
Priority: normal | Milestone:
Component: Compiler | Version: 8.2.1-rc1
Resolution: worksforme | Keywords: ApplicativeDo
Operating System: Unknown/Multiple | Architecture:
Type of failure: GHC rejects | Unknown/Multiple
valid program | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s):
Wiki Page: |
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Changes (by josef):
* status: new => closed
* resolution: => worksforme
Comment:
I'm not seeing the reported behaviour with the latest GHC. I get the
expected type signatures:
{{{
*Main> :t testCase1
testCase1 :: (MyFunctor f, MyApplicative f) => f t -> f a -> f ()
*Main> :t testCase2
testCase2 :: (MyFunctor f, MyApplicative f) => f t -> f a -> f ()
}}}
So I'm closing this ticket. Reopen if you disagree.
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13648#comment:5>
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