#2467: orphan instance warnings are badly behaved
------------------------+---------------------------------------------------
Reporter: duncan | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 6.8.2 | Severity: normal
Keywords: | Testcase:
Architecture: Unknown | Os: Unknown
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There are two problems with them:
* They do not respect -Werror. That is they are not fatal when using
-Werror.
* They are ugly. They do not explain the issue or use Haskell syntax.
They look like a dump of internal data structures and mention internally
generated names.
{{{
Warning: orphan instances:
instance HAppS.Data.Serialize.Serialize
[Distribution.Server.Types.PkgInfo]
= Distribution.Server.State.$f1
instance HAppS.Data.Serialize.Version
[Distribution.Server.Types.PkgInfo]
= Distribution.Server.State.$f2
instance HAppS.Data.Serialize.Serialize
[Distribution.Package.PackageIdentifier]
= Distribution.Server.State.$f3
instance HAppS.Data.Serialize.Version
[Distribution.Package.PackageIdentifier]
= Distribution.Server.State.$f4
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2467>
GHC <http://www.haskell.org/ghc/>
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