Bugs item #1162969, was opened at 2005-03-14 12:56
Message generated for change (Settings changed) made by simonpj
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Category: Compiler
Group: None
Status: Closed
Resolution: Fixed
Priority: 4
Submitted By: Simon Peyton Jones (simonpj)
Assigned to: Simon Peyton Jones (simonpj)
Summary: Over-zealous dup-import warning
Initial Comment:
Pointed out by John Meacham [EMAIL PROTECTED]
In 6.4 the duplicate import warning seems to be
triggered overzealously, even
when one import is qualified and the other isn't.
import qualified Data.Map
import Data.Map(Map)
foo :: Map Int Int
foo = Data.Map.empty
main = do
print foo
produces:
Foo.hs:1:0:
Warning: `Map' is imported more than once:
imported from Data.Map at Foo.hs:3:16-18
imported from Data.Map at Foo.hs:2:0-24
--
Comment By: Simon Peyton Jones (simonpj)
Date: 2005-05-03 13:12
Message:
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OK, I've fixed this. I've changed the message to focus on
each import and report if it is redundant; that is, is completely
covered by another import. (Instead of reporting on some
overlap, in a symmetrical way.)
I hope this should be a big improvement; let me know if not.
Simon
--
Comment By: Fergus Henderson (fergus)
Date: 2005-04-12 23:06
Message:
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Yes, this one is a pain -- it would be great if someone
would fix this.
The only work-around I have at the moment is to use -Wall
-fno-warn-unused-imports instead of -Wall.
- Fergus Henderson.
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