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 <ghc-devs@haskell.org> 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?
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