#3145: ImpredicativeTypes vs. LiberalTypeSynonyms
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Reporter: MartijnVanSteenbergen | Owner:
Type: bug | Status: closed
Priority: normal | Milestone:
Component: Compiler | Version: 6.10.1
Severity: normal | Resolution: fixed
Keywords: | Difficulty: Unknown
Testcase: | Os: Unknown/Multiple
Architecture: Unknown/Multiple |
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Changes (by simonpj):
* status: new => closed
* difficulty: => Unknown
* resolution: => fixed
Comment:
Happily, the HEAD has this fixed already
{{{
$ $vpj -c T3145.hs
T3145.hs:11:0:
Illegal polymorphic or qualified type: RunMud
Perhaps you intended to use -XLiberalTypeSynonyms
In the type signature for `getRunMud':
getRunMud :: Mud RunMud
}}}
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3145#comment:1>
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