Bugs item #1019758, was opened at 2004-08-31 08:14
Message generated for change (Tracker Item Submitted) made by Item Submitter
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Category: Compiler
Group: 6.2.1
Status: Open
Resolution:
# ghc Unused.hs -fwarn-unused-binds -fglasgow-exts
Unused.hs:10: Warning: Defined but not used: Dummy
module Unused(Foo(..),ff) where
class Foo (v :: (* -> *) -> *) where
f :: v a -> Int
ff :: Foo v => v a -> Int
ff (_ :: (v :: (* -> *) -> *) a) = (f (error "bar" :: v Dummy))
data Dummy x =
Not so much a bug this as a whinge:
# ghc -c TH2.hs -fwarn-missing-signatures -fglasgow-exts
Loading package base ... linking ... done.
Loading package haskell98 ... linking ... done.
Loading package haskell-src ... linking ... done.
TH2.hs:6: Warning: Definition but no type signature for `a'
TH2.h
Bugs item #1018607, was opened at 2004-08-29 16:36
Message generated for change (Comment added) made by simonmar
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Sub
Bugs item #940294, was opened at 2004-04-22 20:16
Message generated for change (Settings changed) made by simonmar
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Category: libraries (other)
Group: 6.2.1
>Status: Closed
Resolution: No
According to
http://www.haskell.org/ghc/docs/latest/html/users_guide/options-sanity.html
there is a GHC option -fwarn-misc. But ghc-6.2.1 doesn't seem to have it.
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