#1647: Using -fdicts-strict flag causes Core Lint error
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Reporter: [EMAIL PROTECTED] | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 6.7
Severity: minor | Resolution:
Keywords: | Difficulty: Unknown
Os: Unknown | Testcase:
Architecture: Unknown |
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Old description:
> It appears that passing in the {{{-fdicts-strict}}} flag results in a
> Core Lint error for any program:
> {{{$ ghc -fdicts-strict -dcore-lint hello.hs }}}
> {{{*** Core Lint Errors: in result of Desugar ***
> {-# LINE 3 "hello.hs #-}:
> [RHS of $dMonad_a6a :: GHC.Base.Monad GHC.IOBase.IO]
> Recursive or top-level binder has strict demand info: $dMonad_a6a
> Binder's demand info: T}}}
> The flag is documented only minimally, so I'm not sure whether it's
> something that still gets used a lot. Thus I'm not sure whether it would
> be worth it to fix it or just remove the flag. This is only in HEAD.
New description:
It appears that passing in the {{{-fdicts-strict}}} flag results in a Core
Lint error for any program:
{{{
$ ghc -fdicts-strict -dcore-lint hello.hs
}}}
{{{
*** Core Lint Errors: in result of Desugar ***
{-# LINE 3 "hello.hs #-}:
[RHS of $dMonad_a6a :: GHC.Base.Monad GHC.IOBase.IO]
Recursive or top-level binder has strict demand info: $dMonad_a6a
Binder's demand info: T
}}}
The flag is documented only minimally, so I'm not sure whether it's
something that still gets used a lot. Thus I'm not sure whether it would
be worth it to fix it or just remove the flag. This is only in HEAD.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1647>
GHC <http://www.haskell.org/ghc/>
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