Missing warning on duplicate import
The following program does not give a warning:
{-# OPTIONS_GHC -Wall #-}
import Data.List
import Data.List
main :: IO ()
main = print $ sort "hello"
But this program does:
{-# OPTIONS_GHC -Wall #-}
import Data.List(sort)
import Data.List
main :: IO ()
main = print $ sort "hello"
with:
Warning: Redundant import of: `sort'
It is also imported from Data.List at Test.hs:4:0-15
It seems surprising that 100% identical imports aren't given as warnings, as in the first example.
Trac metadata
Trac field | Value |
---|---|
Version | 6.10.4 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | ndmitchell@gmail.com |
Operating system | |
Architecture |