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 > <[email protected]> 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: [email protected] <mailto:[email protected]> > 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/> > > This message, and any attachments, is for the intended recipient(s) only, may > contain information that is privileged, confidential and/or proprietary and > subject to important terms and conditions available at > http://www.digitalasset.com/emaildisclaimer.html > <http://www.digitalasset.com/emaildisclaimer.html>. If you are not the > intended recipient, please delete this > message._______________________________________________ > ghc-devs mailing list > [email protected] > http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
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