Re: [ambiguous occurrence bug?]

This looks like a bug to me. Post at https://gitlab.haskell.org/ghc/ghc/issues/ https://gitlab.haskell.org/ghc/ghc/issues/ Thanks! Richard

On Mar 17, 2019, at 1:50 PM, Shayne Fletcher via ghc-devs wrote:

Sorry in advance if I should be posting questions of this kind elsewhere (please tell me if so!).

Consider this two file program: ``` module T where main = undefined

module Main where import T main = putStrLn "Hello world!" ```

Both 8.4.3 and 8.6.3 agree: ``` Main.hs:1:1: error: Ambiguous occurrence ‘main’ It could refer to either ‘T.main’, imported from ‘T’ at Main.hs:2:1-8 (and originally defined at Main.hs:2:1-4) or ‘Main.main’, defined at Main.hs:5:1 ```

Is this expected behavior? Does it not contradict "If the export list is omitted, all values, types and classes defined in the module are exported, but not those that are imported" (https://www.haskell.org/onlinereport/haskell2010/haskellch5.html https://www.haskell.org/onlinereport/haskell2010/haskellch5.html)? If the latter, is this a bug? What am I missing?

-- Shayne Fletcher Language Engineer c: +1 917 699 7763 e: shayne.fletcher@daml.com mailto:shayne.fletcher@daml.com Digital Asset Holdings, LLC 4 World Trade Center 150 Greenwich Street, 47th Floor          https://maps.google.com/?q=150+Greenwich+Street,+47th+Floor%C2%A0+%C2%A0+%C2%A0+%C2%A0+%C2%A0+New+York,+NY+10007,+USA&entry=gmail&source=g New York, NY 10007, USA https://maps.google.com/?q=150+Greenwich+Street,+47th+Floor%C2%A0+%C2%A0+%C2%A0+%C2%A0+%C2%A0+New+York,+NY+10007,+USA&entry=gmail&source=g digitalasset.com http://www.digitalasset.com/

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