Re: [GHC] #14438: Using a (meaningless) generic currency sign (¤) instead of $ causes panicing

GHC ghc-devs at haskell.org
Tue Nov 7 21:28:40 UTC 2017


#14438: Using a (meaningless) generic currency sign (¤) instead of $ causes
panicing
---------------------------------+--------------------------------------
        Reporter:  Izmaki        |                Owner:  (none)
            Type:  bug           |               Status:  closed
        Priority:  low           |            Milestone:
       Component:  GHCi          |              Version:  8.0.2
      Resolution:  duplicate     |             Keywords:  ¤
Operating System:  Linux         |         Architecture:  x86_64 (amd64)
 Type of failure:  None/Unknown  |            Test Case:
      Blocked By:                |             Blocking:
 Related Tickets:  #13106        |  Differential Rev(s):
       Wiki Page:                |
---------------------------------+--------------------------------------

Comment (by Izmaki):

 Ah, apologies for the duplicate. I wasn't able to find something similar
 when searching. Have a great evening, and thank you for making Haskell
 better :-)


 Replying to [comment:1 RyanGlScott]:
 > Thanks for the bug report. This is a duplicate of #13106, and has been
 fixed in GHC 8.2:
 >
 > {{{
 > GHCi, version 8.2.1: http://www.haskell.org/ghc/  :? for help
 > Loaded GHCi configuration from /home/rgscott/.ghci
 > λ> let ones x = snd $ divMod x 10
 > λ> ones ¤ (5 :: Integral)
 >
 > <interactive>:2:6: error:
 >     Variable not in scope: (¤) :: (b0 -> b0) -> t0 -> t1
 >
 > <interactive>:2:14: error:
 >     • Expecting one more argument to ‘Integral’
 >       Expected a type, but ‘Integral’ has kind ‘* -> Constraint’
 >     • In an expression type signature: Integral
 >       In the second argument of ‘(¤)’, namely ‘(5 :: Integral)’
 >       In the expression: (¤) ones (5 :: Integral)
 > }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14438#comment:2>
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