#4983: Warning about redundant import is wrong when hiding identifiers in order to avoid export ambiguities -------------------------------------------------+------------------------- Reporter: Lemming | Owner: Type: bug | Status: Priority: normal | closed Component: Compiler | Milestone: Resolution: wontfix | Version: 7.0.1 Operating System: Unknown/Multiple | Keywords: Type of failure: Incorrect warning at | Architecture: compile-time | Unknown/Multiple Test Case: | Difficulty: Blocking: | Unknown | Blocked By: | Related Tickets: -------------------------------------------------+------------------------- Changes (by tibbe): * difficulty: => Unknown Comment: This problem popped up in the containers package which quite reasonably does: {{{ module Data.IntMap (fold) where import Data.IntMap.Base -- exports foldr import Prelude hiding (foldr) fold = foldr }}} This means that GHC HEAD doesn't validate against containers anymore. We can work around the issue, but GHC is to blame here. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4983#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler